Independent Lab Confirms Gold and Silver Recoveries of 89% and 75% Respectively in Sulphides at Palta Dorada
Original announcement by tmx on
- Company
- Peruvian Metals Corp
- Ticker
- PER
- Exchange
- TSX
- Region
- Northern Peru
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Metallurgy
- Extracted
- 2026-09-12 18:45:44 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Peruvian Metals Corp has announced updated metallurgical results for its Palta Dorada property in Peru. Independent testing by Certmin S.A. confirmed gold recoveries of 89% and improved silver recoveries of 75% using flotation on sulphide material.
Reasoning: The release confirms improved silver metallurgical recoveries in sulphide material via flotation, supported by an accredited laboratory.
Positive factors
- Improved silver recovery from 61% to 75%
- Gold recovery remains strong at 89%
- Accredited laboratory (Certmin S.A.) confirmation
- High head grades for sulphide material
Negative factors
- Testing limited to sulphide and oxide composites
Facts used in scoring: 4
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: Sulphide material is intended for processing at the Aguila Norte plant using flotation.
Evidence · text
“sulphide material will be shipped to the Plant for processing ... using flotation methods”
QA/QC Disclosedpositive · Story-specific tag
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release names an accredited laboratory (Certmin S.A.) and a Qualified Person (Jeffrey Reeder).
Evidence · text
“performed by Certmin S.A., an accredited testing laboratory for 43-101 purposes”
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 2 distinct composites were tested
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Metallurgical Results (4)
flotationPalta Dorada · goldRecovery: 89 %Head Grade: 11.1Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Palta Dorada
- Commodity
- gold
- Region
- peru
- Reported Region
- Northern Peru
- Ticker
- PER
Test Work
- Program Status
- detailed
- Test Type
- flotation
- Processing Route
- flotation
- Sample
- sulphide material composite
Recovery
- Recovery
- 89 %
- Recovery Basis
- actual_test
- Head Grade
- 11.1
- Head Grade Unit
- g/t
Lab
- Laboratory
- Certmin S.A.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-04-14T00:00:00.000Z
Reasoning: Confirmed high gold recovery on high-grade sulphide material.
Positive factors
- High head grade
- Strong recovery
Evidence · text
“gold recoveries of 89% ... head grade of the new metallurgical sample assayed 11.10 grams Au/mt”
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
flotationPalta Dorada · silverRecovery: 75 %Head Grade: 4.67Head Grade Unit: oz/mtView all detailsHide details
Identity
- Project
- Palta Dorada
- Commodity
- silver
- Region
- peru
- Reported Region
- Northern Peru
- Ticker
- PER
Test Work
- Program Status
- detailed
- Test Type
- flotation
- Processing Route
- flotation
- Sample
- sulphide material composite
Recovery
- Recovery
- 75 %
- Recovery Basis
- actual_test
- Head Grade
- 4.67
- Head Grade Unit
- oz/mt
Lab
- Laboratory
- Certmin S.A.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-04-14T00:00:00.000Z
Reasoning: Substantial improvement in silver recovery compared to previous results.
Positive factors
- Significant improvement in recovery from 61% to 75%
Evidence · text
“improved silver recoveries to 75% ... head grade ... 4.67 ounces Ag/mt”
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
agitated cyanide leachingPalta Dorada · goldRecovery: 82 %Head Grade: 35.1Head Grade Unit: g/tHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Palta Dorada
- Commodity
- gold
- Region
- peru
- Reported Region
- Northern Peru
- Ticker
- PER
Test Work
- Program Status
- detailed
- Test Type
- agitated cyanide leaching
- Processing Route
- agitated cyanide leaching
- Sample
- oxide material (previous metallurgical work)
Recovery
- Recovery
- 82 %
- Recovery Basis
- actual_test
- Head Grade
- 35.1
- Head Grade Unit
- g/t
Lab
- Laboratory
- Auro Met Labs
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2026-01-21T00:00:00.000Z
Dates
- Event date
- 2026-04-14T00:00:00.000Z
Reasoning: Historical oxide results restated for context.
Evidence · text
“head grade of a previously reported metallurgical test from the oxide material ... returned 35.1 grams Au/mt ... recoveries of 82% for gold”
agitated cyanide leachingPalta Dorada · silverRecovery: 58 %Head Grade: 1.51Head Grade Unit: oz/mtHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Palta Dorada
- Commodity
- silver
- Region
- peru
- Reported Region
- Northern Peru
- Ticker
- PER
Test Work
- Program Status
- detailed
- Test Type
- agitated cyanide leaching
- Processing Route
- agitated cyanide leaching
- Sample
- oxide material (previous metallurgical work)
Recovery
- Recovery
- 58 %
- Recovery Basis
- actual_test
- Head Grade
- 1.51
- Head Grade Unit
- oz/mt
Lab
- Laboratory
- Auro Met Labs
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2026-01-21T00:00:00.000Z
Dates
- Event date
- 2026-04-14T00:00:00.000Z
Reasoning: Historical oxide results restated for context.
Evidence · text
“returned 35.1 grams Au/mt and 1.51 ounces Ag/mt ... recoveries of 82% for gold and 58% for silver”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 58% is below the weak band (75%)
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.