# Independent Lab Confirms Gold and Silver Recoveries of 89% and 75% Respectively in Sulphides at Palta Dorada Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/independent-lab-confirms-gold-and-silver-recoveries-of-89-and-75-respectively-in--b61b9de9-296a-4a36-b6e0-e66508da5140 Original source: https://money.tmx.com/en/quote/PER/news/7257442778679222/independent-lab-confirms-gold-and-silver-recoveries-of-89-and-75-respectively-in Publisher: tmx Original announcement: 2026-04-14T12:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - 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 Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas 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 factor: Improved silver recovery from 61% to 75% - Positive factor: Gold recovery remains strong at 89% - Positive factor: Accredited laboratory \(Certmin S.A.\) confirmation - Positive factor: High head grades for sulphide material - Negative factor: Testing limited to sulphide and oxide composites Facts used in scoring: 4 ## Classification and evidence **Mill Route** Polarity: neutral Definition: 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 Disclosed** Polarity: positive Story-specific tag Definition: 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 Tested** Polarity: positive Definition: 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) ### flotation [Link to this fact](https://atlas-extractions.minestarters.com/news/independent-lab-confirms-gold-and-silver-recoveries-of-89-and-75-respectively-in--b61b9de9-296a-4a36-b6e0-e66508da5140#fact-metallurgical-facts-0) Palta Dorada · gold #### 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 factor: High head grade - Positive factor: 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 Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: processing\_route matches the flotation signal ### flotation [Link to this fact](https://atlas-extractions.minestarters.com/news/independent-lab-confirms-gold-and-silver-recoveries-of-89-and-75-respectively-in--b61b9de9-296a-4a36-b6e0-e66508da5140#fact-metallurgical-facts-1) Palta Dorada · silver #### 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 factor: 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 Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: processing\_route matches the flotation signal ### agitated cyanide leaching [Link to this fact](https://atlas-extractions.minestarters.com/news/independent-lab-confirms-gold-and-silver-recoveries-of-89-and-75-respectively-in--b61b9de9-296a-4a36-b6e0-e66508da5140#fact-metallurgical-facts-2) Palta Dorada · gold Historical result Needs review: historical\_restatement #### 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 leaching [Link to this fact](https://atlas-extractions.minestarters.com/news/independent-lab-confirms-gold-and-silver-recoveries-of-89-and-75-respectively-in--b61b9de9-296a-4a36-b6e0-e66508da5140#fact-metallurgical-facts-3) Palta Dorada · silver Historical result Needs review: historical\_restatement #### 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 Recovery** Polarity: negative Definition: 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.