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
- 2026-08-21 00:07:48 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Peruvian Metals Corp has announced updated metallurgical results for the Palta Dorada property in Peru, confirming 89% gold and 75% silver recoveries from sulphide material via flotation. The results show a significant improvement in silver recovery compared to previous testing and were conducted by an accredited laboratory.
Reasoning: The release confirms improved silver recoveries (75% vs 61% previously) and stable gold recoveries (89%) using flotation on sulphide material, validated by an accredited lab.
Positive factors
- Improved silver recovery
- Accredited laboratory confirmation
- High head grades
Negative factors
- Historical data comparison required
Facts used in scoring: 4
Classification and evidence
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 mentions work performed by Certmin S.A., an accredited testing laboratory for 43-101 purposes.
Evidence · text
“performed by Certmin S.A., an accredited testing laboratory for 43-101 purposes”
QP/CP Signedpositive · Story-specific tag
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: Jeffrey Reeder, P. Geo., is named as the Qualified Person who reviewed and approved the technical contents.
Evidence · text
“Qualified Person Jeffrey Reeder, P. Geo., is the Qualified Person... who has reviewed and approved the technical contents”
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Metallurgical Results (4)
flotationgoldRecovery: 89 %Head Grade: 11.1Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- PER
Test Work
- Test Type
- flotation
- Processing Route
- flotation
- Sample
- sulphide material composite over one metre
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: 89% gold recovery in sulphides is strong and confirmed by an accredited lab.
Positive factors
- Stable high recovery
Evidence · text
“confirms gold recoveries of 89% and improved silver recoveries to 75%... sulphide material using flotation methods confirmed the 89% level for gold”
flotationsilverRecovery: 75 %Head Grade: 4.67Head Grade Unit: oz/mtView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- PER
Test Work
- Test Type
- flotation
- Processing Route
- flotation
- Sample
- sulphide material composite over one metre
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: Silver recovery improved from 61% in previous work to 75% in current work.
Positive factors
- Significant improvement in recovery
Evidence · text
“improved silver recoveries to 75%”
agitated cyanide leachinggoldRecovery: 82 %Head Grade: 35.1Head Grade Unit: g/tHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- PER
Test Work
- Test Type
- agitated cyanide leaching
- Processing Route
- agitated cyanide leaching
- Sample
- oxide material composite over 1/2 metre
- Leach Time
- 48 hours
Recovery
- Recovery
- 82 %
- Recovery Basis
- actual_test
- Head Grade
- 35.1
- Head Grade Unit
- g/t
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: This is a restatement of previous oxide metallurgical results.
Negative factors
- Historical data
Evidence · text
“The 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 leachingsilverRecovery: 58 %Head Grade: 1.51Head Grade Unit: oz/mtHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- PER
Test Work
- Test Type
- agitated cyanide leaching
- Processing Route
- agitated cyanide leaching
- Sample
- oxide material composite over 1/2 metre
- Leach Time
- 48 hours
Recovery
- Recovery
- 58 %
- Recovery Basis
- actual_test
- Head Grade
- 1.51
- Head Grade Unit
- oz/mt
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: This is a restatement of previous oxide metallurgical results.
Negative factors
- Historical data
Evidence · text
“recoveries of 82% for gold and 58% for silver over 48 hours”
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.