# Cosigo Resources Announces Results of Conglomerate Layer Bulk Sample for Gravity Concentration Tests Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity--fd32e410-e15c-43ba-9eb0-51a19a9fed45 Original source: https://money.tmx.com/en/quote/CSG/news/5430182525688225/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity Publisher: tmx Original announcement: 2026-04-07T11:04:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Cosigo Resources Ltd. - Ticker: CSG - Exchange: TSX - Region: Colombia - Primary commodity: Gold - Secondary commodities: None reported - Document categories: Metallurgy - Extracted: 2026-08-23 06:32:23 UTC Narrative sentiment: -0.40 · Bearish ## Minestarters Atlas summary Cosigo Resources reported results from Knelson gravity concentration tests on a 60kg bulk sample from the Chicken Coop conglomerate at the Taraira project. The sample had a very low weighted average gold grade of 0.03 g/t Au, with testing showing significant gold distribution across tails and concentrates. Reasoning: The bulk sample testing on the Chicken Coop conglomerate yielded a very low weighted average head grade of 0.03 g/t Au. While gravity separation was tested, the gold is largely lost to the Knelson tails \(35.2% of total Au\) and the pan tails \(which actually had a higher grade than the concentrate\) suggest complex liberation or poor recovery efficiency. - Positive factor: Gravity concentration demonstrated potential to recover gold into pan tails - Negative factor: Very low head grade \(0.03 g/t Au\) - Negative factor: High gold loss in Knelson tails - Negative factor: Pan concentrate grade is low for gravity recovery Facts used in scoring: 3 ## Classification and evidence **Bench Scale Only** Polarity: negative Definition: Only preliminary bench tests completed — no locked-cycle or pilot work. Why it applies: The testing was conducted on a 60kg composite sample using a 20kg Knelson test, which is bench-scale work. Evidence · text > Knelson gravity testing was conducted on a composite 60kg sample **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: The release explicitly describes Knelson gravity testing. Evidence · text > Knelson gravity testing was conducted ## Extracted facts Stored fact records: 3. Some facts used in scoring do not have a stored record. ## Metallurgical Results (3) ### gravity [Link to this fact](https://atlas-staging.minestarters.com/news/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity--fd32e410-e15c-43ba-9eb0-51a19a9fed45#fact-metallurgical-facts-0) gold #### Identity - Commodity: gold - Ticker: CSG #### Test Work - Program Status: preliminary - Test Type: gravity - Processing Route: gravity - Sample: 20kg Knelson gravity test - Pan Concentrate #### Recovery - Recovery: 6.9 % - Recovery Basis: actual\_test - Head Grade: 0.03 - Head Grade Unit: g/t - Conc. Grade: 5.21 - Conc. Grade Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-07T00:00:00.000Z Reasoning: The pan concentrate grade of 5.21 g/t Au is relatively low for a gravity concentrate. - Negative factor: Low concentrate grade Evidence · text > Pan Concentrate weighing 11.2g... and assayed 5.21g/t Au, containing 6.9% of the Au in the sample. ### gravity [Link to this fact](https://atlas-staging.minestarters.com/news/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity--fd32e410-e15c-43ba-9eb0-51a19a9fed45#fact-metallurgical-facts-1) gold #### Identity - Commodity: gold - Ticker: CSG #### Test Work - Program Status: preliminary - Test Type: gravity - Processing Route: gravity - Sample: 20kg Knelson gravity test - Pan Tails #### Recovery - Recovery: 58 % - Recovery Basis: actual\_test - Head Grade: 0.03 - Head Grade Unit: g/t - Conc. Grade: 10.2 - Conc. Grade Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-07T00:00:00.000Z Reasoning: The pan tails contained the majority of the gold \(58%\) at a higher grade than the concentrate. - Positive factor: High grade in pan tails Evidence · text > Pan Tails were 48.1g... and assayed 10.2g/t Au, containing 58.0% of the Au in the sample. ### gravity [Link to this fact](https://atlas-staging.minestarters.com/news/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity--fd32e410-e15c-43ba-9eb0-51a19a9fed45#fact-metallurgical-facts-2) gold #### Identity - Commodity: gold - Ticker: CSG #### Test Work - Program Status: preliminary - Test Type: gravity - Processing Route: gravity - Sample: 20kg Knelson gravity test - Knelson Tails #### Recovery - Recovery: 35.2 % - Recovery Basis: actual\_test - Head Grade: 0.03 - Head Grade Unit: g/t - Conc. Grade: 0.02 - Conc. Grade Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-07T00:00:00.000Z Reasoning: 35.2% of the gold in the sample was lost to the Knelson tails. - Negative factor: High gold loss to tails Evidence · text > Knelson Tails were 19.9993kg... and assayed 0.02g/t Au representing 35.2% of the Au in the sample. ## 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.