# Phase 1 Metallurgical Results Show Broad Cyanide Response at Volcan Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/phase-1-metallurgical-results-show-broad-cyanide-response-at-volcan--82721e69-a91a-45c0-8e0b-56c59a6a55eb Original source: https://money.tmx.com/en/quote/TNGD/news/6201286505644670/phase-1-metallurgical-results-show-broad-cyanide-response-at-volcan Publisher: tmx Original announcement: 2026-07-02T10:30:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Tiernan Gold Corp. - Ticker: TNGD - Exchange: TSX - Region: Atacama Region, Chile - Primary commodity: Gold - Secondary commodities: Copper - Document categories: Metallurgy - Extracted: 2026-09-15 02:43:01 UTC Narrative sentiment: 0.40 · Bullish ## Minestarters Atlas summary Tiernan Gold Corp. has released Phase 1 diagnostic leach results for the Volcan Gold Project in Chile, showing an average cyanide-soluble gold distribution of 75.1% across 36 variability samples. The results demonstrate a broad response to cyanide across different grade ranges, which will guide Phase 2 metallurgical testing and Pre-Feasibility Study \(PFS\) modelling. Reasoning: Phase 1 diagnostic leach results demonstrate good cyanide solubility \(75.1% average\) across various grade profiles, providing a technical basis for upcoming PFS work, though results are not yet commercial-scale projections. - Positive factor: Broad cyanide response across multiple grade ranges - Positive factor: Higher-grade material shows stronger average response - Positive factor: Diagnostic results provide useful baseline for PFS modelling - Negative factor: Results are diagnostic and not projected commercial recoveries - Negative factor: Identification of lower-response metallurgical domains requires further investigation Facts used in scoring: 5 ## Classification and evidence **Bench Scale Only** Polarity: negative Definition: Only preliminary bench tests completed — no locked-cycle or pilot work. Why it applies: The results are described as Phase 1 diagnostic leach tests, which are screening-level tests used to characterize deportment rather than commercial-scale tests. Evidence · text > These results are diagnostic test results and should not be interpreted as projected heap leach recoveries. **QP/CP Signed** Polarity: positive Story-specific tag Definition: 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: The release includes a Qualified Person statement signed by Sergio Lagos. Evidence · text > supervised and prepared by Sergio Lagos, RM CMC, who is an independent "qualified person" **Heap Leach Route** Polarity: neutral Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected. Why it applies: the document describes a heap\_leach route \("heap leach"\) **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a mill\_cil route \("agitated leach"\) **Multi-Domain Tested** Polarity: positive Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed. Why it applies: 5 distinct composites were tested ## Extracted facts Stored fact records: 5. Some facts used in scoring do not have a stored record. ## Metallurgical Results (5) ### diagnostic leach [Link to this fact](https://atlas-extractions.minestarters.com/news/phase-1-metallurgical-results-show-broad-cyanide-response-at-volcan--82721e69-a91a-45c0-8e0b-56c59a6a55eb#fact-metallurgical-facts-0) Volcan Gold Project · gold #### Identity - Project: Volcan Gold Project - Commodity: gold - Region: chile - Reported Region: Atacama Region, Chile - Ticker: TNGD #### Test Work - Program Status: preliminary - Test Type: diagnostic leach - Sample: Low grade variability samples - Grind P80: 75 µm #### Recovery - Recovery: 68.45 % - Recovery Basis: actual\_test - Head Grade: 0.62 - Head Grade Unit: g/t Au #### Lab - Laboratory: SGS Canada Inc. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-07-02T00:00:00.000Z Reasoning: Average recovery for low grade group based on provided range midpoint. Evidence · table > 75.5% Context: Low grade #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 68.45% is below the weak band \(80%\) ### diagnostic leach [Link to this fact](https://atlas-extractions.minestarters.com/news/phase-1-metallurgical-results-show-broad-cyanide-response-at-volcan--82721e69-a91a-45c0-8e0b-56c59a6a55eb#fact-metallurgical-facts-1) Volcan Gold Project · gold #### Identity - Project: Volcan Gold Project - Commodity: gold - Region: chile - Reported Region: Atacama Region, Chile - Ticker: TNGD #### Test Work - Program Status: preliminary - Test Type: diagnostic leach - Sample: Medium grade variability samples - Grind P80: 75 µm #### Recovery - Recovery: 61.65 % - Recovery Basis: actual\_test - Head Grade: 1.005 - Head Grade Unit: g/t Au #### Lab - Laboratory: SGS Canada Inc. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-07-02T00:00:00.000Z Reasoning: Average recovery for medium grade group based on provided range midpoint. Evidence · table > 71.8% Context: Medium grade #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 61.65% is below the weak band \(80%\) ### diagnostic leach [Link to this fact](https://atlas-extractions.minestarters.com/news/phase-1-metallurgical-results-show-broad-cyanide-response-at-volcan--82721e69-a91a-45c0-8e0b-56c59a6a55eb#fact-metallurgical-facts-2) Volcan Gold Project · gold #### Identity - Project: Volcan Gold Project - Commodity: gold - Region: chile - Reported Region: Atacama Region, Chile - Ticker: TNGD #### Test Work - Program Status: preliminary - Test Type: diagnostic leach - Sample: High grade variability samples - Grind P80: 75 µm #### Recovery - Recovery: 69 % - Recovery Basis: actual\_test - Head Grade: 1.61 - Head Grade Unit: g/t Au #### Lab - Laboratory: SGS Canada Inc. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-07-02T00:00:00.000Z Reasoning: Average recovery for high grade group based on provided range midpoint. Evidence · table > 77.8% Context: High grade #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 69% is below the weak band \(80%\) ### diagnostic leach [Link to this fact](https://atlas-extractions.minestarters.com/news/phase-1-metallurgical-results-show-broad-cyanide-response-at-volcan--82721e69-a91a-45c0-8e0b-56c59a6a55eb#fact-metallurgical-facts-3) Volcan Gold Project · gold #### Identity - Project: Volcan Gold Project - Commodity: gold - Region: chile - Reported Region: Atacama Region, Chile - Ticker: TNGD #### Test Work - Program Status: preliminary - Test Type: diagnostic leach - Sample: Super-high grade variability samples - Grind P80: 75 µm #### Recovery - Recovery: 76.75 % - Recovery Basis: actual\_test - Head Grade: 2.615 - Head Grade Unit: g/t Au #### Lab - Laboratory: SGS Canada Inc. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-07-02T00:00:00.000Z Reasoning: Average recovery for super-high grade group based on provided range midpoint. Evidence · table > 81.0% Context: Super-high grade #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 76.75% is below the weak band \(80%\) ### diagnostic leach [Link to this fact](https://atlas-extractions.minestarters.com/news/phase-1-metallurgical-results-show-broad-cyanide-response-at-volcan--82721e69-a91a-45c0-8e0b-56c59a6a55eb#fact-metallurgical-facts-4) Volcan Gold Project · gold #### Identity - Project: Volcan Gold Project - Commodity: gold - Region: chile - Reported Region: Atacama Region, Chile - Ticker: TNGD #### Test Work - Program Status: preliminary - Test Type: diagnostic leach - Sample: Stockpile-designated variability samples - Grind P80: 75 µm #### Recovery - Recovery: 67.5 % - Recovery Basis: actual\_test - Head Grade: 0.38 - Head Grade Unit: g/t Au #### Lab - Laboratory: SGS Canada Inc. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-07-02T00:00:00.000Z Reasoning: Average recovery for stockpile group based on provided range midpoint. Evidence · table > 70.5% Context: Stockpile-designated #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 67.5% is below the weak band \(80%\) ## 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.