Cerro de Pasco Resources Advances Metallurgical Test Program; Evaluates Two-Concentrate Flowsheet for Silver-Bearing Pyrite and Base Metals
Original announcement by tmx on
- Company
- Cerro de Pasco Resources Inc.
- Ticker
- CDPR
- Exchange
- TSX
- Region
- central Peru
- Primary commodity
- Silver
- Secondary commodities
- Zinc, Lead, Copper, Sulfur, Gallium, Indium
- Document categories
- Metallurgy
- Extracted
- 2026-09-19 14:34:50 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Cerro de Pasco Resources has advanced its metallurgical test program for the Quiulacocha Tailings Reprocessing Project in central Peru, reporting strong silver and sulphide recovery in both bench-scale and mini-pilot plant tests. The company is evaluating a two-concentrate flowsheet to produce a silver-bearing pyrite concentrate and a base metal concentrate, with the pyrite stream showing potential as a sulphur feedstock. While results are positive and corroborate earlier findings, further optimization and studies are required to confirm commercial viability and overall deposit representativeness.
Reasoning: The document reports positive metallurgical test results from both bench-scale and mini-pilot plant programs for the Quiulacocha Tailings Reprocessing Project. Key highlights include strong silver and sulphide recovery into a bulk concentrate, the development of a two-concentrate flowsheet, and the potential for pyrite as a sulphur resource. While results are promising and show good reproducibility from bench to mini-pilot scale, the work is still at an exploratory stage, and further studies are needed to confirm commercial viability and representativeness across the entire deposit.
Positive factors
- Strong silver and sulphide recovery in mini-pilot plant testing, indicating good metallurgical responsiveness.
- Development of a two-concentrate flowsheet (pyrite and base metals) with both containing silver, suggesting potential for multiple revenue streams.
- Mini-pilot plant results corroborate bench-scale findings, providing initial indication of scaled-up reproducibility.
- Pyrite concentrate stream being evaluated as an alternative source of sulphur for essential industries, adding potential value to a previously considered challenge.
- Low sulphide tailings targeted, which may reduce acid-generation potential, addressing a key environmental objective.
Negative factors
- Exploratory nature of gallium and indium test-work, with potential being conceptual at this stage.
- Results are from specific samples and conditions, not yet demonstrated at commercial scale or representative of the whole tailings.
- Further optimization work, Phase 2 drilling, and additional engineering studies are required before conclusions can be drawn about the deposit as a whole.
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 168
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: the document describes a flotation route ("flotation")
POX/BIOX Routeneutral
Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX.
Why it applies: the document describes a pox_biox route ("roasting")
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 3 distinct composites were tested
Extracted facts
Stored fact records: 168. Some facts used in scoring do not have a stored record.
Metallurgical Results (168)
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 55.62Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 55.62
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
- Bench-scale test provides initial data for flowsheet development.
Evidence · table
“55.62”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.14Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.14
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.14”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.14Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.14
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.14”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 1.14Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 1.14
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for lead.
Evidence · table
“1.14”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.43Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 1.43
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.43”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.3Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.3
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.30”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 34.69Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 34.69
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“34.69”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 33.96Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 33.96
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“33.96”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 52.65Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 52.65
- Head Grade Unit
- g/t
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“52.65”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.12Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.12
- Head Grade Unit
- %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.12”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.88Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.88
- Head Grade Unit
- %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for lead.
Evidence · table
“0.88”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.48Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 1.48
- Head Grade Unit
- %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.48”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.25Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.25
- Head Grade Unit
- %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.25”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 31.45Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 31.45
- Head Grade Unit
- %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“31.45”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 29.51Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 29.51
- Head Grade Unit
- %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“29.51”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 47.83Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Head Grade
- 47.83
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“47.83”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.09Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Head Grade
- 0.09
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.09”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.95Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Head Grade
- 0.95
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for lead.
Evidence · table
“0.95”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.54Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Head Grade
- 1.54
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.54”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 30.93Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Head Grade
- 30.93
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“30.93”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 27.97Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Head Grade
- 27.97
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“27.97”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 45.77Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 45.77
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“45.77”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.15Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.15
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.15”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.11Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.11
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.11”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.87Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.87
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for lead.
Evidence · table
“0.87”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.51Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 1.51
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.51”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.25Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.25
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.25”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 29.67Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 29.67
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“29.67”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 29.85Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 29.85
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“29.85”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 45.42Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 45.42
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“45.42”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.04Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.04
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.04”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.03Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.03
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.03”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.49Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.49
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is low to moderate, contributing to the base metal potential.
Positive factors
- Low to moderate head grade for lead.
Evidence · table
“0.49”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.17Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 1.17
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.17”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.19Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.19
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.19”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 32.11Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 32.11
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“32.11”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 30.29Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 30.29
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“30.29”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 45.45Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 45.45
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“45.45”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.04Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.04
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.04”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.03Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.03
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.03”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.47Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.47
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is low to moderate, contributing to the base metal potential.
Positive factors
- Low to moderate head grade for lead.
Evidence · table
“0.47”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.25Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 1.25
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.25”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.19Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.19
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.19”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 32.64Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 32.64
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“32.64”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 29.66Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 29.66
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“29.66”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 46.39Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 46.39
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“46.39”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.04Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.04
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.04”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.03Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.03
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.03”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.5Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.5
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is low to moderate, contributing to the base metal potential.
Positive factors
- Low to moderate head grade for lead.
Evidence · table
“0.50”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.22Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 1.22
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.22”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.19Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.19
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.19”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 31.91Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 31.91
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“31.91”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 29.89Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 29.89
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“29.89”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 45.76Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 45.76
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“45.76”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.14Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.14
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.14”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.11Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.11
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.11”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.82Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.82
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for lead.
Evidence · table
“0.82”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.49Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 1.49
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.49”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.23Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.23
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.23”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 29.39Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 29.39
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“29.39”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 29.71Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 29.71
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“29.71”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 45.93Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 45.93
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“45.93”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.13Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.13
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.13”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.12Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.12
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.12”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.87Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.87
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for lead.
Evidence · table
“0.87”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.53Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 1.53
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.53”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.24Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.24
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.24”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 29.57Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 29.57
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“29.57”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 29.47Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 29.47
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“29.47”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 45.22Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 45.22
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“45.22”
Context: FT-40
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.04Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.04
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.04”
Context: FT-40
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.03Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.03
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.03”
Context: FT-40
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.51Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.51
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is low to moderate, contributing to the base metal potential.
Positive factors
- Low to moderate head grade for lead.
Evidence · table
“0.51”
Context: FT-40
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.19Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 1.19
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.19”
Context: FT-40
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.18Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.18
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.18”
Context: FT-40
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 32.26Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 32.26
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“32.26”
Context: FT-40
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 28.85Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 28.85
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“28.85”
Context: FT-40
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 44.65Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 44.65
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a high head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- High head grade for silver.
Evidence · table
“44.65”
Context: FT-42
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.04Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.04
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.04”
Context: FT-42
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.04Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.04
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.04”
Context: FT-42
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.5Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.5
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is low to moderate, contributing to the base metal potential.
Positive factors
- Low to moderate head grade for lead.
Evidence · table
“0.50”
Context: FT-42
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.2Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 1.2
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.20”
Context: FT-42
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.19Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.19
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.19”
Context: FT-42
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 32.16Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 32.16
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“32.16”
Context: FT-42
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 29.29Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 29.29
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“29.29”
Context: FT-42
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverHead Grade: 37.4Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 37.4
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows a moderate head grade for silver, contributing positively to the overall metallurgical understanding of the project.
Positive factors
- Moderate head grade for silver.
Evidence · table
“37.40”
Context: FT-4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldHead Grade: 0.17Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.17
- Head Grade Unit
- g/t
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The gold head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for gold.
Evidence · table
“0.17”
Context: FT-4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.09Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.09
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.09”
Context: FT-4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.37Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.37
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is low, contributing to the base metal potential.
Positive factors
- Low head grade for lead.
Evidence · table
“0.37”
Context: FT-4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.65Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 1.65
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.65”
Context: FT-4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicHead Grade: 0.17Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 0.17
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Arsenic is present at a level that could be a deleterious element, potentially impacting concentrate quality or processing costs.
Negative factors
- Presence of arsenic, a deleterious element, which may incur penalties or require specific processing.
Evidence · table
“0.17”
Context: FT-4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 26.94Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 26.94
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“26.94”
Context: FT-4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 27.64Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Head Grade
- 27.64
- Head Grade Unit
- %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“27.64”
Context: FT-4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
mini-pilotQuiulacocha Tailings Reprocessing Project · silverHead Grade: 49.2Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- mini-pilot
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 49.2
- Head Grade Unit
- g/t
Lab
- Laboratory
- SGS Chile
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This mini-pilot test shows a high head grade for silver, indicating strong potential for recovery at a larger scale.
Positive factors
- High head grade for silver.
- Mini-pilot scale test provides higher confidence in results.
Evidence · table
“49.20”
Context: MG#6
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
mini-pilotQuiulacocha Tailings Reprocessing Project · copperHead Grade: 0.03Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- mini-pilot
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.03
- Head Grade Unit
- %
Lab
- Laboratory
- SGS Chile
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The copper head grade is relatively low, indicating it is a minor component in this test.
Negative factors
- Low head grade for copper.
Evidence · table
“0.03”
Context: MG#6
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
mini-pilotQuiulacocha Tailings Reprocessing Project · leadHead Grade: 0.52Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- mini-pilot
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 0.52
- Head Grade Unit
- %
Lab
- Laboratory
- SGS Chile
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The lead head grade is low to moderate, contributing to the base metal potential.
Positive factors
- Low to moderate head grade for lead.
Evidence · table
“0.52”
Context: MG#6
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
mini-pilotQuiulacocha Tailings Reprocessing Project · zincHead Grade: 1.13Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- mini-pilot
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 1.13
- Head Grade Unit
- %
Lab
- Laboratory
- SGS Chile
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The zinc head grade is moderate, contributing to the base metal potential.
Positive factors
- Moderate head grade for zinc.
Evidence · table
“1.13”
Context: MG#6
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
mini-pilotQuiulacocha Tailings Reprocessing Project · iron_oreHead Grade: 34.1Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- mini-pilot
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 34.1
- Head Grade Unit
- %
Lab
- Laboratory
- SGS Chile
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron content is expected given the pyrite-dominant nature of the tailings, which is a key focus of the flowsheet.
Positive factors
- High iron content, consistent with pyrite-dominant feed.
Evidence · table
“34.10”
Context: MG#6
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
mini-pilotQuiulacocha Tailings Reprocessing Project · sulfurHead Grade: 28.7Head Grade Unit: %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- mini-pilot
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Head Grade
- 28.7
- Head Grade Unit
- %
Lab
- Laboratory
- SGS Chile
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: The high sulphur head grade is a positive indicator for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- High sulphur content, supporting the potential for a pyrite concentrate as a sulphur source.
Evidence · table
“28.70”
Context: MG#6
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Pilot Scale Completepositive
Pilot or demonstration plant testing completed under continuous operation.
Why it applies: test_type names pilot-scale work
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 88.5 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 88.5 %
- Recovery Basis
- actual_test
- Conc. Grade
- 71.79
- Conc. Grade Unit
- g/t
- Mass Pull
- 68.5 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“88.5”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldRecovery: 88.4 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 88.4 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.18
- Conc. Grade Unit
- g/t
- Mass Pull
- 68.5 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good gold recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good gold recovery despite low head grade.
Negative factors
- Low concentrate grade for gold.
Evidence · table
“88.4”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 84.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 84.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.17
- Conc. Grade Unit
- %
- Mass Pull
- 68.5 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“84.6”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 68.8 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 68.8 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.14
- Conc. Grade Unit
- %
- Mass Pull
- 68.5 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Moderate lead recovery and concentrate grade contribute to the overall base metal potential.
Positive factors
- Moderate lead recovery and concentrate grade.
Evidence · table
“68.8”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 80.7 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 80.7 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.69
- Conc. Grade Unit
- %
- Mass Pull
- 68.5 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Strong zinc recovery and good concentrate grade.
Evidence · table
“80.7”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicRecovery: 87.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 87.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.38
- Conc. Grade Unit
- %
- Mass Pull
- 68.5 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High recovery and concentrate grade of arsenic suggest a significant challenge for concentrate marketability due to penalty elements.
Negative factors
- High recovery of arsenic into concentrate, indicating a potential penalty element issue.
- High concentrate grade for arsenic.
Evidence · table
“87.6”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 84.8 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 84.8 %
- Recovery Basis
- actual_test
- Conc. Grade
- 42.95
- Conc. Grade Unit
- %
- Mass Pull
- 68.5 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“84.8”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 97.8 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 97.8 %
- Recovery Basis
- actual_test
- Conc. Grade
- 48.44
- Conc. Grade Unit
- %
- Mass Pull
- 68.5 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“97.8”
Context: FT-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 89.3 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 89.3 %
- Recovery Basis
- actual_test
- Conc. Grade
- 75.16
- Conc. Grade Unit
- g/t
- Mass Pull
- 62.6 %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“89.3”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 83.4 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 83.4 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.15
- Conc. Grade Unit
- %
- Mass Pull
- 62.6 %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“83.4”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 65.9 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 65.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.92
- Conc. Grade Unit
- %
- Mass Pull
- 62.6 %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Moderate lead recovery and concentrate grade contribute to the overall base metal potential.
Positive factors
- Moderate lead recovery and concentrate grade.
Evidence · table
“65.9”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 82.3 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 82.3 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.94
- Conc. Grade Unit
- %
- Mass Pull
- 62.6 %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Strong zinc recovery and good concentrate grade.
Evidence · table
“82.3”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicRecovery: 86.5 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 86.5 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.35
- Conc. Grade Unit
- %
- Mass Pull
- 62.6 %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High recovery and concentrate grade of arsenic suggest a significant challenge for concentrate marketability due to penalty elements.
Negative factors
- High recovery of arsenic into concentrate, indicating a potential penalty element issue.
- High concentrate grade for arsenic.
Evidence · table
“86.5”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 82.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 82.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 41.53
- Conc. Grade Unit
- %
- Mass Pull
- 62.6 %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“82.6”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 97 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 97 %
- Recovery Basis
- actual_test
- Conc. Grade
- 45.76
- Conc. Grade Unit
- %
- Mass Pull
- 62.6 %
Lab
- Laboratory
- XPS
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“97.0”
Context: F007
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 92.8 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Recovery
- 92.8 %
- Recovery Basis
- actual_test
- Conc. Grade
- 72.98
- Conc. Grade Unit
- g/t
- Mass Pull
- 60.8 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“92.8”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 92.8% is at or above the exceptional band (90%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 92.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Recovery
- 92.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.14
- Conc. Grade Unit
- %
- Mass Pull
- 60.8 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Very good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Very good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“92.6”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 92.6% is at or above the exceptional band (92%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 78 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Recovery
- 78 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.22
- Conc. Grade Unit
- %
- Mass Pull
- 60.8 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong lead recovery and good concentrate grade contribute to the overall base metal potential.
Positive factors
- Strong lead recovery and good concentrate grade.
Evidence · table
“78.0”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 75.2 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Recovery
- 75.2 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.9
- Conc. Grade Unit
- %
- Mass Pull
- 60.8 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Strong zinc recovery and good concentrate grade.
Evidence · table
“75.2”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 81.4 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Recovery
- 81.4 %
- Recovery Basis
- actual_test
- Conc. Grade
- 41.39
- Conc. Grade Unit
- %
- Mass Pull
- 60.8 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“81.4”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 97.2 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0005-GM
Recovery
- Recovery
- 97.2 %
- Recovery Basis
- actual_test
- Conc. Grade
- 44.73
- Conc. Grade Unit
- %
- Mass Pull
- 60.8 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“97.2”
Context: KF-5
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 87.4 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 87.4 %
- Recovery Basis
- actual_test
- Conc. Grade
- 69.99
- Conc. Grade Unit
- g/t
- Mass Pull
- 57.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“87.4”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldRecovery: 88 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 88 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.22
- Conc. Grade Unit
- g/t
- Mass Pull
- 57.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good gold recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good gold recovery despite low head grade.
Negative factors
- Low concentrate grade for gold.
Evidence · table
“88.0”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 83.2 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 83.2 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.17
- Conc. Grade Unit
- %
- Mass Pull
- 57.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“83.2”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 63 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 63 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.96
- Conc. Grade Unit
- %
- Mass Pull
- 57.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Moderate lead recovery and concentrate grade contribute to the overall base metal potential.
Positive factors
- Moderate lead recovery and concentrate grade.
Evidence · table
“63.0”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 81.3 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 81.3 %
- Recovery Basis
- actual_test
- Conc. Grade
- 2.15
- Conc. Grade Unit
- %
- Mass Pull
- 57.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Strong zinc recovery and good concentrate grade.
Evidence · table
“81.3”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicRecovery: 85.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 85.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.38
- Conc. Grade Unit
- %
- Mass Pull
- 57.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High recovery and concentrate grade of arsenic suggest a significant challenge for concentrate marketability due to penalty elements.
Negative factors
- High recovery of arsenic into concentrate, indicating a potential penalty element issue.
- High concentrate grade for arsenic.
Evidence · table
“85.6”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 78.9 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 78.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 40.94
- Conc. Grade Unit
- %
- Mass Pull
- 57.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“78.9”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 95.9 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 95.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 50.07
- Conc. Grade Unit
- %
- Mass Pull
- 57.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“95.9”
Context: FT-1
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 93.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 93.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 69.68
- Conc. Grade Unit
- g/t
- Mass Pull
- 61 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“93.6”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 93.6% is at or above the exceptional band (90%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldRecovery: 84.1 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 84.1 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.05
- Conc. Grade Unit
- g/t
- Mass Pull
- 61 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good gold recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good gold recovery despite low head grade.
Negative factors
- Low concentrate grade for gold.
Evidence · table
“84.1”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 79 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 79 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.04
- Conc. Grade Unit
- %
- Mass Pull
- 61 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“79.0”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 79% is below the weak band (80%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 74.5 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 74.5 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.6
- Conc. Grade Unit
- %
- Mass Pull
- 61 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong lead recovery and good concentrate grade contribute to the overall base metal potential.
Positive factors
- Strong lead recovery and good concentrate grade.
Evidence · table
“74.5”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 71.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 71.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.38
- Conc. Grade Unit
- %
- Mass Pull
- 61 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Strong zinc recovery and good concentrate grade.
Evidence · table
“71.6”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicRecovery: 90.8 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 90.8 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.29
- Conc. Grade Unit
- %
- Mass Pull
- 61 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High recovery and concentrate grade of arsenic suggest a significant challenge for concentrate marketability due to penalty elements.
Negative factors
- High recovery of arsenic into concentrate, indicating a potential penalty element issue.
- High concentrate grade for arsenic.
Evidence · table
“90.8”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 74.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 74.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 39.28
- Conc. Grade Unit
- %
- Mass Pull
- 61 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“74.6”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 97.7 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 97.7 %
- Recovery Basis
- actual_test
- Conc. Grade
- 48.52
- Conc. Grade Unit
- %
- Mass Pull
- 61 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“97.7”
Context: FT-39
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 94.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 94.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 69.41
- Conc. Grade Unit
- g/t
- Mass Pull
- 62 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“94.6”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 94.6% is at or above the exceptional band (90%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldRecovery: 84.4 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 84.4 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.05
- Conc. Grade Unit
- g/t
- Mass Pull
- 62 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good gold recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good gold recovery despite low head grade.
Negative factors
- Low concentrate grade for gold.
Evidence · table
“84.4”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 78.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 78.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.04
- Conc. Grade Unit
- %
- Mass Pull
- 62 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“78.6”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 78.6% is below the weak band (80%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 76.1 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 76.1 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.58
- Conc. Grade Unit
- %
- Mass Pull
- 62 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong lead recovery and good concentrate grade contribute to the overall base metal potential.
Positive factors
- Strong lead recovery and good concentrate grade.
Evidence · table
“76.1”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 74.8 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 74.8 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.51
- Conc. Grade Unit
- %
- Mass Pull
- 62 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Strong zinc recovery and good concentrate grade.
Evidence · table
“74.8”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicRecovery: 90.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 90.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.28
- Conc. Grade Unit
- %
- Mass Pull
- 62 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High recovery and concentrate grade of arsenic suggest a significant challenge for concentrate marketability due to penalty elements.
Negative factors
- High recovery of arsenic into concentrate, indicating a potential penalty element issue.
- High concentrate grade for arsenic.
Evidence · table
“90.6”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 74.9 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 74.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 39.45
- Conc. Grade Unit
- %
- Mass Pull
- 62 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“74.9”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 98.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 98.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 47.18
- Conc. Grade Unit
- %
- Mass Pull
- 62 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“98.6”
Context: FT-41
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 92 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 92 %
- Recovery Basis
- actual_test
- Conc. Grade
- 70.42
- Conc. Grade Unit
- g/t
- Mass Pull
- 60.6 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“92.0”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 92% is at or above the exceptional band (90%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldRecovery: 83.3 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 83.3 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.06
- Conc. Grade Unit
- g/t
- Mass Pull
- 60.6 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good gold recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good gold recovery despite low head grade.
Negative factors
- Low concentrate grade for gold.
Evidence · table
“83.3”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 80.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 80.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.04
- Conc. Grade Unit
- %
- Mass Pull
- 60.6 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“80.6”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 70 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 70 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.58
- Conc. Grade Unit
- %
- Mass Pull
- 60.6 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong lead recovery and good concentrate grade contribute to the overall base metal potential.
Positive factors
- Strong lead recovery and good concentrate grade.
Evidence · table
“70.0”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 62.9 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 62.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.27
- Conc. Grade Unit
- %
- Mass Pull
- 60.6 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Moderate zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Moderate zinc recovery and good concentrate grade.
Evidence · table
“62.9”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicRecovery: 89 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 89 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.28
- Conc. Grade Unit
- %
- Mass Pull
- 60.6 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High recovery and concentrate grade of arsenic suggest a significant challenge for concentrate marketability due to penalty elements.
Negative factors
- High recovery of arsenic into concentrate, indicating a potential penalty element issue.
- High concentrate grade for arsenic.
Evidence · table
“89.0”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 74.8 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 74.8 %
- Recovery Basis
- actual_test
- Conc. Grade
- 39.41
- Conc. Grade Unit
- %
- Mass Pull
- 60.6 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“74.8”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 97.1 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 26-0001-BK
Recovery
- Recovery
- 97.1 %
- Recovery Basis
- actual_test
- Conc. Grade
- 47.93
- Conc. Grade Unit
- %
- Mass Pull
- 60.6 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“97.1”
Context: FT-37
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 87.2 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 87.2 %
- Recovery Basis
- actual_test
- Conc. Grade
- 67.75
- Conc. Grade Unit
- g/t
- Mass Pull
- 58.9 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“87.2”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldRecovery: 89.2 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 89.2 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.22
- Conc. Grade Unit
- g/t
- Mass Pull
- 58.9 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good gold recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good gold recovery despite low head grade.
Negative factors
- Low concentrate grade for gold.
Evidence · table
“89.2”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 81.9 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 81.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.15
- Conc. Grade Unit
- %
- Mass Pull
- 58.9 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“81.9”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 63.6 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 63.6 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.89
- Conc. Grade Unit
- %
- Mass Pull
- 58.9 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Moderate lead recovery and concentrate grade contribute to the overall base metal potential.
Positive factors
- Moderate lead recovery and concentrate grade.
Evidence · table
“63.6”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 78 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 78 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1.97
- Conc. Grade Unit
- %
- Mass Pull
- 58.9 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Strong zinc recovery and good concentrate grade.
Evidence · table
“78.0”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicRecovery: 85.9 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 85.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.34
- Conc. Grade Unit
- %
- Mass Pull
- 58.9 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High recovery and concentrate grade of arsenic suggest a significant challenge for concentrate marketability due to penalty elements.
Negative factors
- High recovery of arsenic into concentrate, indicating a potential penalty element issue.
- High concentrate grade for arsenic.
Evidence · table
“85.9”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 81 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 81 %
- Recovery Basis
- actual_test
- Conc. Grade
- 40.42
- Conc. Grade Unit
- %
- Mass Pull
- 58.9 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“81.0”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 97.3 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 97.3 %
- Recovery Basis
- actual_test
- Conc. Grade
- 49.08
- Conc. Grade Unit
- %
- Mass Pull
- 58.9 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“97.3”
Context: FT-2
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · silverRecovery: 89.5 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- silver
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 89.5 %
- Recovery Basis
- actual_test
- Conc. Grade
- 69.43
- Conc. Grade Unit
- g/t
- Mass Pull
- 59.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: This bench-scale test shows strong silver recovery and a high concentrate grade, indicating good metallurgical performance.
Positive factors
- High silver recovery.
- High concentrate grade for silver.
Evidence · table
“89.5”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · goldRecovery: 86 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 86 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.2
- Conc. Grade Unit
- g/t
- Mass Pull
- 59.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good gold recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good gold recovery despite low head grade.
Negative factors
- Low concentrate grade for gold.
Evidence · table
“86.0”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · copperRecovery: 78.1 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- copper
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 78.1 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.16
- Conc. Grade Unit
- %
- Mass Pull
- 59.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Good copper recovery is observed, but the low concentrate grade suggests it's a minor component.
Positive factors
- Good copper recovery despite low head grade.
Negative factors
- Low concentrate grade for copper.
Evidence · table
“78.1”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 78.1% is below the weak band (80%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · leadRecovery: 60.7 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- lead
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 60.7 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.95
- Conc. Grade Unit
- %
- Mass Pull
- 59.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Moderate lead recovery and concentrate grade contribute to the overall base metal potential.
Positive factors
- Moderate lead recovery and concentrate grade.
Evidence · table
“60.7”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · zincRecovery: 77.9 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- zinc
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 77.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 2.16
- Conc. Grade Unit
- %
- Mass Pull
- 59.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Strong zinc recovery and good concentrate grade indicate favorable metallurgical performance for zinc.
Positive factors
- Strong zinc recovery and good concentrate grade.
Evidence · table
“77.9”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · arsenicRecovery: 81.3 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- arsenic
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 81.3 %
- Recovery Basis
- actual_test
- Conc. Grade
- 0.35
- Conc. Grade Unit
- %
- Mass Pull
- 59.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High recovery and concentrate grade of arsenic suggest a significant challenge for concentrate marketability due to penalty elements.
Negative factors
- High recovery of arsenic into concentrate, indicating a potential penalty element issue.
- High concentrate grade for arsenic.
Evidence · table
“81.3”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · iron_oreRecovery: 76.4 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- iron_ore
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 76.4 %
- Recovery Basis
- actual_test
- Conc. Grade
- 40.88
- Conc. Grade Unit
- %
- Mass Pull
- 59.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: High iron recovery and concentrate grade are expected and positive for the pyrite concentrate stream.
Positive factors
- High iron recovery and concentrate grade, consistent with pyrite concentration.
Evidence · table
“76.4”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
benchQuiulacocha Tailings Reprocessing Project · sulfurRecovery: 93 %View all detailsHide details
Identity
- Project
- Quiulacocha Tailings Reprocessing Project
- Commodity
- sulfur
- Region
- peru
- Reported Region
- central Peru
- Ticker
- CDPR
Test Work
- Program Status
- preliminary
- Test Type
- bench
- Processing Route
- sequential flotation
- Sample
- 25-0009-GM
Recovery
- Recovery
- 93 %
- Recovery Basis
- actual_test
- Conc. Grade
- 49.6
- Conc. Grade Unit
- %
- Mass Pull
- 59.2 %
Lab
- Laboratory
- Plenge
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-09T00:00:00.000Z
Reasoning: Exceptional sulphur recovery and high concentrate grade are very positive for the potential of the pyrite concentrate as a sulphur feedstock.
Positive factors
- Exceptional sulphur recovery and high concentrate grade, supporting the pyrite concentrate strategy.
Evidence · table
“93.0”
Context: FT-7
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.