# Deep Copper at Blue Rose Needs Its Own Proof, Not the Shallow Grades Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0 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 - Extracted: 2026-09-10 15:03:51 UTC Narrative sentiment: 0.20 · Bullish ## Minestarters Atlas summary Cobra Resources' diamond drilling at the Blue Rose prospect indicates that the shallow high-grade skarn and a deeper copper zone are distinct alteration systems. While porphyry indicators like bornite and hydrothermal breccia were logged, the actual assay results for the deeper zone are pending and expected in late 2026. Reasoning: The article discusses geochemical differentiation between a shallow skarn and a deeper porphyry system. While the deep zone shows promising indicators, the actual grades are not yet reported. - Positive factor: geochemical evidence of a separate deep porphyry system - Positive factor: presence of porphyry indicators \(breccia, anhydrite, bornite\) - Positive factor: step-out drilling program imminent - Negative factor: actual assay results for the deep zone are still outstanding - Negative factor: pXRF readings are not a substitute for laboratory assays Facts used in scoring: 8 ## Classification and evidence **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: The article positions Blue Rose within the Nackara Arc, a known porphyry province in South Australia. Evidence · text > Blue Rose is one of the prospects in the Manna Hill copper project in South Australia, where drilling to date has concentrated on shallow, high-grade skarn material. **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a flotation route \("concentrate"\) ## Extracted facts Stored fact records: 8. Some facts used in scoring do not have a stored record. ## Drill Results (8) ### Fact 1 [Link to this fact](https://atlas-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0#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 \(Jan 2026\). - Positive factor: significant width 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-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0#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 previous 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-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0#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 intercept from previous drilling. - Positive factor: strong grade 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-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0#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: Gold grade from previous 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-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0#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: High grade intercept from previous drilling. - Positive factor: strong grade 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-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0#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: Gold grade from previous 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 ### Fact 7 [Link to this fact](https://atlas-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0#fact-drill-facts-6) 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: 0.8 - Grade Unit: % - Intercept: 22 m - From: 20 m - To: 42 m - Intercept Depth: 20 m #### Classification - Sample Type: drill - Group ID: Blue\_Rose:20-42 #### 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: Copper intercept from previous drilling. Evidence · text > 22 m at 0.8% copper from 20 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 8 [Link to this fact](https://atlas-staging.minestarters.com/news/deep-copper-at-blue-rose-needs-its-own-proof-not-the-shallow-grades--6e9e4e2b-145b-4da2-bf0d-a837733b67f0#fact-drill-facts-7) 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: 0.34 - Grade Unit: % - Intercept: 56 m - From: 34 m - To: 90 m - Intercept Depth: 34 m #### Classification - Sample Type: drill - Group ID: Blue\_Rose:34-90 #### 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: Lower grade intercept from previous drilling. Evidence · text > 56 m at 0.34% copper from 34 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.