# Cosigo Resources Announces Results of Conglomerate Layer Bulk Sample for Gravity Concentration Tests Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity--76fec981-15ad-472a-9ac2-aa27ca03ef19 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: 2026-09-15 19:02:19 UTC Narrative sentiment: -0.40 · Bearish ## Minestarters Atlas summary Cosigo Resources has released metallurgical results from Knelson gravity concentration tests on a 60kg bulk sample from the Chicken Coop Conglomerate at the Taraira project. The tests revealed a very low weighted average gold grade of 0.03 g/t Au, though gravity separation was able to concentrate gold into the pan tails. Reasoning: The bulk sample testing shows extremely low gold grades \(0.03 g/t Au\), which significantly limits the economic potential of the conglomerate layer despite successful gravity separation into tails. - Positive factor: Gravity concentration demonstrated ability to concentrate gold into pan tails - Positive factor: Knelson testing conducted on bulk sample - Negative factor: Very low head grade \(0.03 g/t Au\) makes economic viability questionable - Negative factor: Low recovery efficiency in the pan concentrate 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: Testing was conducted on a 60kg composite sample using Knelson gravity testing. Evidence · text > Knelson gravity testing was conducted on a composite 60kg sample **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: Erik Ostensoe, P.Geo., a Qualified Person, has reviewed and approved the disclosure. Evidence · text > Erik Ostensoe, P.Geo., ... a Qualified Person ... has reviewed and approves the scientific and technical disclosure **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a flotation route \("concentrate"\) **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: the document describes a gravity route \("gravity"\) **Single Domain Only** Polarity: negative Definition: Testing limited to one composite or domain — representativeness not established. Why it applies: only one composite was tested ## 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-extractions.minestarters.com/news/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity--76fec981-15ad-472a-9ac2-aa27ca03ef19#fact-metallurgical-facts-0) Taraira · gold #### Identity - Project: Taraira - Commodity: gold - Region: colombia - Reported Region: Colombia - Ticker: CSG #### Test Work - Program Status: preliminary - Test Type: gravity - Processing Route: Knelson gravity testing - Sample: 20kg Knelson gravity test \(Pan Concentrate\) #### Recovery - Recovery: 6.9 % - Head Grade: 0.03 - Head Grade Unit: g/t - Conc. Grade: 5.21 - Conc. Grade Unit: g/t - Tailings Grade: 10.2 - Tailings Grade Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-07T00:00:00.000Z Reasoning: Pan concentrate grade is low relative to the tails. Evidence · text > Pan Concentrate weighing 11.2g... assayed 5.21g/t Au, containing 6.9% of the Au in the sample. #### Tags used in scoring **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: processing\_route matches the gravity signal **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 6.9% is below the weak band \(80%\) ### gravity [Link to this fact](https://atlas-extractions.minestarters.com/news/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity--76fec981-15ad-472a-9ac2-aa27ca03ef19#fact-metallurgical-facts-1) Taraira · gold #### Identity - Project: Taraira - Commodity: gold - Region: colombia - Reported Region: Colombia - Ticker: CSG #### Test Work - Program Status: preliminary - Test Type: gravity - Processing Route: Knelson gravity testing - Sample: 20kg Knelson gravity test \(Pan Tails\) #### Recovery - Recovery: 58 % - Head Grade: 0.03 - Head Grade Unit: g/t - Conc. Grade: 10.2 - Conc. Grade Unit: g/t - Tailings Grade: 0.02 - Tailings Grade Unit: g/t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-07T00:00:00.000Z Reasoning: The majority of the gold \(58%\) was recovered in the pan tails. - Positive factor: High recovery into the pan tails Evidence · text > Pan Tails were 48.1g... assayed 10.2g/t Au, containing 58.0% of the Au in the sample. #### Tags used in scoring **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: processing\_route matches the gravity signal **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 \(80%\) ### gravity [Link to this fact](https://atlas-extractions.minestarters.com/news/cosigo-resources-announces-results-of-conglomerate-layer-bulk-sample-for-gravity--76fec981-15ad-472a-9ac2-aa27ca03ef19#fact-metallurgical-facts-2) Taraira · gold #### Identity - Project: Taraira - Commodity: gold - Region: colombia - Reported Region: Colombia - Ticker: CSG #### Test Work - Program Status: preliminary - Test Type: gravity - Processing Route: Knelson gravity testing - Sample: 20kg Knelson gravity test \(Knelson Tails\) #### Recovery - Recovery: 35.2 % - 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 remains in the Knelson tails. - Negative factor: Significant gold loss to tails Evidence · text > Knelson Tails were 19.9993kg... assayed 0.02g/t Au representing 35.2% of the Au in the sample. #### Tags used in scoring **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: processing\_route matches the gravity signal **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 35.2% 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.