# Deep Copper at Blue Rose Needs Its Own Proof, Not the Shallow Grades Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--a6eeba15-3011-4bcf-825b-78dac69b736f Original source: https://www.cruxinvestor.com/posts/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades Publisher: cruxinvestor Original announcement: 2026-09-10T00:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Cobra Resources - Ticker: COBR - Exchange: Unavailable - Region: South Australia - Primary commodity: Copper - Secondary commodities: Gold - Document categories: Drill results, Other - Extracted: 2026-09-12 00:50:01 UTC Narrative sentiment: 0.20 · Bullish ## Minestarters Atlas summary Cobra Resources' diamond drilling at the Blue Rose prospect indicates that the deep copper zone and the shallow skarn are distinct alteration systems. While pXRF readings and core logging show promising porphyry indicators at depth, official assay results are expected in Q3 or Q4 2026. Reasoning: The article discusses geochemical indicators of a deep copper porphyry system at Blue Rose, though actual assay results for the recent drilling are still pending. - Positive factor: geochemical evidence of a separate deep porphyry system - Positive factor: presence of porphyry indicators \(breccia, anhydrite, potassic alteration\) - Positive factor: shift from chalcopyrite to bornite at depth - Negative factor: assays for the recent diamond drilling have not yet been reported - Negative factor: pXRF readings are not a substitute for laboratory assays Facts used in scoring: 6 ## Classification and evidence **Step-Out Extension** Polarity: positive Definition: Mineralization extended beyond the previously known limit. Why it applies: The article mentions a September step-out drill program to test the Blue Rose skarn and other porphyry systems. Evidence · text > September step-out drill program are the next two tests of the deeper zone **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: The article explicitly states that assays from the recent diamond drilling have not been reported, meaning laboratory verification is currently unavailable. Evidence · text > Assays from the diamond drilling have not been reported. ## Extracted facts Stored fact records: 6. Some facts used in scoring do not have a stored record. ## Drill Results (6) ### Fact 1 [Link to this fact](https://atlas-extractions.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--a6eeba15-3011-4bcf-825b-78dac69b736f#fact-drill-facts-0) Blue Rose · copper Historical result Needs review: drill\_no\_hole\_id #### Identity - Project: Blue Rose - Commodity: copper - Region: australia\_sa - Reported Region: australia\_sa - Ticker: COBR #### Geometry - Grade: 0.6 - Grade Unit: % - Intercept: 86 m - From: 18 m - To: 104 m - Intercept Depth: 18 m #### Classification - Sample Type: drill - Group ID: Blue\_Rose:18-104 #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: Yes - Historical Source Date: 2026-01-01T00:00:00.000Z #### Dates - Event date: 2026-09-10T00:00:00.000Z Reasoning: Shallow skarn intercept reported in previous drilling \(January 2026\). Evidence · text > 86 meters \(m\) at 0.60% copper #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### Fact 2 [Link to this fact](https://atlas-extractions.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--a6eeba15-3011-4bcf-825b-78dac69b736f#fact-drill-facts-1) Blue Rose · gold Historical result Needs review: drill\_no\_hole\_id #### Identity - Project: Blue Rose - Commodity: gold - Region: australia\_sa - Reported Region: australia\_sa - Ticker: COBR #### Geometry - Grade: 0.14 - Grade Unit: g/t - Intercept: 86 m - From: 18 m - To: 104 m - Intercept Depth: 18 m #### Classification - Sample Type: drill - Group ID: Blue\_Rose:18-104 #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: Yes - Historical Source Date: 2026-01-01T00:00:00.000Z #### Dates - Event date: 2026-09-10T00:00:00.000Z Reasoning: Shallow gold grade from January 2026 drilling. Evidence · text > 0.14 grams per metric ton \(g/t\) gold from 18 m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### Fact 3 [Link to this fact](https://atlas-extractions.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--a6eeba15-3011-4bcf-825b-78dac69b736f#fact-drill-facts-2) Blue Rose · copper Historical result Needs review: drill\_no\_hole\_id #### Identity - Project: Blue Rose - Commodity: copper - Region: australia\_sa - Reported Region: australia\_sa - Ticker: COBR #### Geometry - Grade: 1.02 - Grade Unit: % - Intercept: 74 m - From: 70 m - To: 144 m - Intercept Depth: 70 m #### Classification - Sample Type: drill - Group ID: Blue\_Rose:70-144 #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: Yes - Historical Source Date: 2026-01-01T00:00:00.000Z #### Dates - Event date: 2026-09-10T00:00:00.000Z Reasoning: High-grade shallow skarn intercept from January 2026 drilling. Evidence · text > 74 m at 1.02% copper #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### Fact 4 [Link to this fact](https://atlas-extractions.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--a6eeba15-3011-4bcf-825b-78dac69b736f#fact-drill-facts-3) Blue Rose · gold Historical result Needs review: drill\_no\_hole\_id #### Identity - Project: Blue Rose - Commodity: gold - Region: australia\_sa - Reported Region: australia\_sa - Ticker: COBR #### Geometry - Grade: 0.25 - Grade Unit: g/t - Intercept: 74 m - From: 70 m - To: 144 m - Intercept Depth: 70 m #### Classification - Sample Type: drill - Group ID: Blue\_Rose:70-144 #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: Yes - Historical Source Date: 2026-01-01T00:00:00.000Z #### Dates - Event date: 2026-09-10T00:00:00.000Z Reasoning: Shallow gold grade from January 2026 drilling. Evidence · text > 0.25 g/t gold from 70 m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### Fact 5 [Link to this fact](https://atlas-extractions.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--a6eeba15-3011-4bcf-825b-78dac69b736f#fact-drill-facts-4) Blue Rose · copper Historical result Needs review: drill\_no\_hole\_id #### Identity - Project: Blue Rose - Commodity: copper - Region: australia\_sa - Reported Region: australia\_sa - Ticker: COBR #### Geometry - Grade: 1 - Grade Unit: % - Intercept: 62 m - From: 62 m - To: 124 m - Intercept Depth: 62 m #### Classification - Sample Type: drill - Group ID: Blue\_Rose:62-124 #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: Yes - Historical Source Date: 2026-01-01T00:00:00.000Z #### Dates - Event date: 2026-09-10T00:00:00.000Z Reasoning: Shallow skarn intercept from January 2026 drilling. Evidence · text > 62 m at 1.0% copper #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### Fact 6 [Link to this fact](https://atlas-extractions.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--a6eeba15-3011-4bcf-825b-78dac69b736f#fact-drill-facts-5) Blue Rose · gold Historical result Needs review: drill\_no\_hole\_id #### Identity - Project: Blue Rose - Commodity: gold - Region: australia\_sa - Reported Region: australia\_sa - Ticker: COBR #### Geometry - Grade: 0.08 - Grade Unit: g/t - Intercept: 62 m - From: 62 m - To: 124 m - Intercept Depth: 62 m #### Classification - Sample Type: drill - Group ID: Blue\_Rose:62-124 #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: Yes - Historical Source Date: 2026-01-01T00:00:00.000Z #### Dates - Event date: 2026-09-10T00:00:00.000Z Reasoning: Shallow gold grade from January 2026 drilling. Evidence · text > 0.08 g/t gold from 62 m #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ## 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.