Largo Announces Copper Mineralization Studies Across its Maracás Menchen Vanadium Deposits; Extends US$6 Million Secured Loan
Original announcement by tmx on
- Company
- Largo Inc.
- Ticker
- LGO
- Exchange
- TSX
- Region
- Brazil
- Primary commodity
- Copper
- Secondary commodities
- Platinum, Palladium, Gold, Vanadium, Titanium
- Document categories
- Drill results, Metallurgy
- Extracted
- 2026-09-18 07:01:51 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Largo has initiated studies to evaluate copper, gold, and PGM recovery as byproducts at its Maracás Menchen complex in Brazil. Preliminary metallurgical tests indicate that copper can be recovered using conventional flotation, potentially utilizing existing ilmenite infrastructure.
Reasoning: Largo is demonstrating potential for significant byproduct revenue from copper and PGMs using existing infrastructure, which provides a strategic hedge against low vanadium prices.
Positive factors
- Positive preliminary flotation results for copper
- Potential to utilize existing ilmenite flotation infrastructure
- High commodity prices for copper and PGMs
- QA/QC protocols and accredited labs disclosed
Negative factors
- Results are preliminary and internal
- PGM assays are still pending
Facts used in scoring: 7
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The company is evaluating using existing ilmenite flotation infrastructure for copper recovery.
Evidence · text
“Largo is evaluating using part of its existing ilmenite flotation infrastructure to reduce capital costs”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release explicitly mentions ISO/IEC 17025-accredited laboratories and specific QA/QC methods like standards and blanks.
Evidence · text
“All sample results during the period have been monitored through a QA/QC program that includes the insertion of certified standards, blanks, and pulp and reject duplicate samples.”
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 7. Some facts used in scoring do not have a stored record.
Drill Results (6)
Fact 1Maracás Menchen · copperGrade: 0.16Grade Unit: %Needs review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Maracás Menchen
- Commodity
- copper
- Region
- brazil
- Reported Region
- brazil
- Ticker
- LGO
Geometry
- Grade
- 0.16
- Grade Unit
- %
Classification
- Sample Type
- drill
Location
- Location
- Campbell
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-12T00:00:00.000Z
Reasoning: Average grade for the Campbell deposit based on historical database review.
Evidence · table
“0.16”
Context: 72
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 2Maracás Menchen · copperGrade: 0.14Grade Unit: %Needs review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Maracás Menchen
- Commodity
- copper
- Region
- brazil
- Reported Region
- brazil
- Ticker
- LGO
Geometry
- Grade
- 0.14
- Grade Unit
- %
Classification
- Sample Type
- drill
Location
- Location
- GAN
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-12T00:00:00.000Z
Reasoning: Average grade for the GAN deposit based on historical database review.
Evidence · table
“0.14”
Context: 95
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 3Maracás Menchen · copperGrade: 0.18Grade Unit: %Needs review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Maracás Menchen
- Commodity
- copper
- Region
- brazil
- Reported Region
- brazil
- Ticker
- LGO
Geometry
- Grade
- 0.18
- Grade Unit
- %
Classification
- Sample Type
- drill
Location
- Location
- GAS
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-12T00:00:00.000Z
Reasoning: Average grade for the GAS deposit based on historical database review.
Evidence · table
“0.18”
Context: 15
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 4Maracás Menchen · copperGrade: 0.13Grade Unit: %Needs review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Maracás Menchen
- Commodity
- copper
- Region
- brazil
- Reported Region
- brazil
- Ticker
- LGO
Geometry
- Grade
- 0.13
- Grade Unit
- %
Classification
- Sample Type
- drill
Location
- Location
- SJO
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-12T00:00:00.000Z
Reasoning: Average grade for the SJO deposit based on historical database review.
Evidence · table
“0.13”
Context: 41
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 5Maracás Menchen · copperGrade: 0.13Grade Unit: %Needs review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Maracás Menchen
- Commodity
- copper
- Region
- brazil
- Reported Region
- brazil
- Ticker
- LGO
Geometry
- Grade
- 0.13
- Grade Unit
- %
Classification
- Sample Type
- drill
Location
- Location
- NAO
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-12T00:00:00.000Z
Reasoning: Average grade for the NAO deposit based on historical database review.
Evidence · table
“0.13”
Context: 31
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Fact 6Maracás Menchen · copperGrade: 0.19Grade Unit: %Needs review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Maracás Menchen
- Commodity
- copper
- Region
- brazil
- Reported Region
- brazil
- Ticker
- LGO
Geometry
- Grade
- 0.19
- Grade Unit
- %
Classification
- Sample Type
- drill
Location
- Location
- NAN
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-12T00:00:00.000Z
Reasoning: Average grade for the NAN deposit based on historical database review.
Evidence · table
“0.19”
Context: 97
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Metallurgical Results (1)
flotationMaracás Menchen · copperView all detailsHide details
Identity
- Project
- Maracás Menchen
- Commodity
- copper
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- LGO
Test Work
- Program Status
- preliminary
- Test Type
- flotation
- Processing Route
- conventional flotation
- Sample
- copper-rich mineralized material
Recovery
- Recovery Basis
- unspecified
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-01-12T00:00:00.000Z
Reasoning: Initial tests show promising copper concentrate production via flotation.
Positive factors
- Positive response to conventional flotation
Negative factors
- Preliminary and internal results
Evidence · text
“Preliminary tests indicate a positive response of the copper-rich mineralized material to conventional flotation processes, producing copper concentrates.”
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.