# Alta Copper Announces Positive Metal Recoveries and Provides Project Update Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019 Original source: https://money.tmx.com/en/quote/ATCU/news/6281240450642183/alta-copper-announces-positive-metal-recoveries-and-provides-project-update Publisher: tmx Original announcement: 2024-02-29T13:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-10T22:21:49.623Z Atlas analysis updated: 2026-10-10T22:21:49.623Z - Company: Alta Copper Corp. - Ticker: ATCU - Exchange: TSX - Region: Peru - Primary commodity: Copper - Secondary commodities: Gold, Silver, Molybdenum - Document categories: Metallurgy, Resource update - Extracted: 2026-10-10 22:21:50 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Alta Copper reported positive metallurgical testwork results for the Cañariaco Sur porphyry deposit, featuring copper recoveries up to 97.4% and a low Bond Work Index. The company also provided an updated Inferred Resource estimate for Cañariaco Sur and announced that an optimized PEA is expected in early April 2024. Reasoning: The announcement reports very positive metallurgical results \(high copper/silver recoveries\) and provides a significant resource update for the Cañariaco Sur deposit, which will be incorporated into an upcoming PEA. - Positive factor: High copper recoveries \(up to 97.4%\) - Positive factor: Low Bond Work Index \(11.12 kWh/t\) indicating soft rock - Positive factor: Metallurgically clean concentrates with no deleterious elements - Positive factor: Positive site visit for infrastructure - Negative factor: Gold recoveries in AVP rock type are relatively low \(39.5%\) Facts used in scoring: 18 ## Classification and evidence **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: Copper recoveries up to 97.4% in flotation tests. Evidence · text > achieved metal recoveries of up to 97.4% for copper **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The Cañariaco Sur resource is reported as Inferred. Evidence · text > Cañariaco Sur Inferred Resource **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a flotation route \("flotation"\) **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: 18. Some facts used in scoring do not have a stored record. ## Resource Estimates (12) ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-6) Cañariaco Sur · copper #### Identity - Project: Cañariaco Sur - Commodity: copper - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:3d1d96dcbc71c563ad9b - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 290000000 - Grade: 0.29 - Grade Unit: % #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. - Negative factor: Inferred category only Evidence · table > 0.29 Context: 290.0 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-7) Cañariaco Sur · gold #### Identity - Project: Cañariaco Sur - Commodity: gold - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:3d1d96dcbc71c563ad9b - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 290000000 - Grade: 0.11 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 0.11 Context: 290.0 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-8) Cañariaco Sur · silver #### Identity - Project: Cañariaco Sur - Commodity: silver - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:3d1d96dcbc71c563ad9b - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 290000000 - Grade: 1.3 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 1.3 Context: 290.0 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-9) Cañariaco Sur · molybdenum #### Identity - Project: Cañariaco Sur - Commodity: molybdenum - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:3d1d96dcbc71c563ad9b - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 290000000 - Grade: 22 - Grade Unit: ppm #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 22 Context: 290.0 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-10) Cañariaco Sur · copper #### Identity - Project: Cañariaco Sur - Commodity: copper - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:d75e7b311dac1ba50f40 - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 384500000 - Grade: 0.26 - Grade Unit: % #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 0.26 Context: 384.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-11) Cañariaco Sur · gold #### Identity - Project: Cañariaco Sur - Commodity: gold - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:d75e7b311dac1ba50f40 - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 384500000 - Grade: 0.1 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 0.10 Context: 384.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-12) Cañariaco Sur · silver #### Identity - Project: Cañariaco Sur - Commodity: silver - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:d75e7b311dac1ba50f40 - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 384500000 - Grade: 1.2 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 1.2 Context: 384.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-13) Cañariaco Sur · molybdenum #### Identity - Project: Cañariaco Sur - Commodity: molybdenum - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:d75e7b311dac1ba50f40 - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 384500000 - Grade: 22 - Grade Unit: ppm #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 22 Context: 384.5 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-14) Cañariaco Sur · copper #### Identity - Project: Cañariaco Sur - Commodity: copper - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:8130aee41d4c1233c85d - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 433200000 - Grade: 0.25 - Grade Unit: % #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 0.25 Context: 433.2 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-15) Cañariaco Sur · gold #### Identity - Project: Cañariaco Sur - Commodity: gold - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:8130aee41d4c1233c85d - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 433200000 - Grade: 0.09 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 0.09 Context: 433.2 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-16) Cañariaco Sur · silver #### Identity - Project: Cañariaco Sur - Commodity: silver - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:8130aee41d4c1233c85d - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 433200000 - Grade: 1.2 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 1.2 Context: 433.2 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-resource-facts-17) Cañariaco Sur · molybdenum #### Identity - Project: Cañariaco Sur - Commodity: molybdenum - Region: peru - Reported Region: Peru - Ticker: ATCU #### Resource scope - Estimate type: resource - Resource group id: resource:8130aee41d4c1233c85d - Deposit or zone: Cañariaco Sur #### Resource Data - Category: inferred - Tonnes: 433200000 - Grade: 22 - Grade Unit: ppm #### Prior Estimate - Resource Date: 2022-01-27 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Standard inferred resource component for the project. Evidence · table > 22 Context: 433.2 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported **Stale Estimate** Polarity: negative Definition: Effective date is >2 years old — data currency concern, may not reflect current geological understanding. Why it applies: effective date is 2.1 years before this release ## Metallurgical Results (6) ### flotation [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-metallurgical-facts-0) Cañariaco · copper #### Identity - Project: Cañariaco - Commodity: copper - Region: peru - Reported Region: Peru - Ticker: ATCU #### Test Work - Program Status: preliminary - Test Type: flotation - Processing Route: flotation - Sample: BFP \(Biotite Feldspar Porphyry\) flotation tests #### Recovery - Recovery: 92.5 % - Recovery Basis: actual\_test #### Lab - Laboratory: Plenge - Consultant: Transmin #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: High average recovery for the primary commodity in the main rock type. - Positive factor: Average recovery of 92.5% is strong for copper flotation Evidence · text > BFP tests achieved copper recoveries ranging from 80.4 to 97.4%, with an average recovery of 92.5%. #### 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 **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: 92.5% is at or above the exceptional band \(92%\) ### flotation [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-metallurgical-facts-1) Cañariaco · gold #### Identity - Project: Cañariaco - Commodity: gold - Region: peru - Reported Region: Peru - Ticker: ATCU #### Test Work - Program Status: preliminary - Test Type: flotation - Processing Route: flotation - Sample: BFP \(Biotite Feldspar Porphyry\) flotation tests #### Recovery - Recovery: 63.8 % - Recovery Basis: actual\_test #### Lab - Laboratory: Plenge - Consultant: Transmin #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Moderate gold recovery in the primary rock type. - Positive factor: Recoveries are positive but lower than copper Evidence · text > BFP gold recoveries ranged from 59.4 to 78.5% with an average recovery of 63.8% #### 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 **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 63.8% is below the weak band \(80%\) ### flotation [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-metallurgical-facts-2) Cañariaco · silver #### Identity - Project: Cañariaco - Commodity: silver - Region: peru - Reported Region: Peru - Ticker: ATCU #### Test Work - Program Status: preliminary - Test Type: flotation - Processing Route: flotation - Sample: BFP \(Biotite Feldspar Porphyry\) flotation tests #### Recovery - Recovery: 71.1 % - Recovery Basis: actual\_test #### Lab - Laboratory: Plenge - Consultant: Transmin #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Solid silver recovery in the primary rock type. Evidence · text > silver recoveries from 53.9 to 77.0% with an average of 71.1%. #### 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 **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 71.1% is below the weak band \(75%\) ### flotation [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-metallurgical-facts-3) Cañariaco · copper #### Identity - Project: Cañariaco - Commodity: copper - Region: peru - Reported Region: Peru - Ticker: ATCU #### Test Work - Program Status: preliminary - Test Type: flotation - Processing Route: flotation - Sample: AVP \(Andesite Volcanics\) flotation tests #### Recovery - Recovery: 95.2 % - Recovery Basis: actual\_test #### Lab - Laboratory: Plenge - Consultant: Transmin #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Excellent copper recovery in the secondary rock type. - Positive factor: Very high copper recovery in AVP rock type Evidence · text > For the AVP rock type, the two tests achieved copper recoveries of 94.1 and 96.3% #### 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 **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: 95.2% is at or above the exceptional band \(92%\) ### flotation [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-metallurgical-facts-4) Cañariaco · gold #### Identity - Project: Cañariaco - Commodity: gold - Region: peru - Reported Region: Peru - Ticker: ATCU #### Test Work - Program Status: preliminary - Test Type: flotation - Processing Route: flotation - Sample: AVP \(Andesite Volcanics\) flotation tests #### Recovery - Recovery: 52.7 % - Recovery Basis: actual\_test #### Lab - Laboratory: Plenge - Consultant: Transmin #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Relatively poor gold recovery in the AVP rock type. - Negative factor: Gold recovery in AVP is significantly lower than in BFP Evidence · text > gold recoveries of 39.5 and 65.9% #### 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 **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 52.7% is below the weak band \(80%\) ### flotation [Link to this fact](https://atlas-staging.minestarters.com/news/alta-copper-announces-positive-metal-recoveries-and-provides-project-update--0a0ebbc3-4939-47f5-a245-84fbb56d6019#fact-metallurgical-facts-5) Cañariaco · silver #### Identity - Project: Cañariaco - Commodity: silver - Region: peru - Reported Region: Peru - Ticker: ATCU #### Test Work - Program Status: preliminary - Test Type: flotation - Processing Route: flotation - Sample: AVP \(Andesite Volcanics\) flotation tests #### Recovery - Recovery: 71.4 % - Recovery Basis: actual\_test #### Lab - Laboratory: Plenge - Consultant: Transmin #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2024-02-29T00:00:00.000Z Reasoning: Consistent silver recovery in AVP rock type. Evidence · text > silver recoveries of 71.0 and 71.8% #### 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 **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 71.4% 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.