Cobra’s Manna Hill Footprint Grows as Two New Copper Skarns Emerge
Original announcement by cruxinvestor on
- Company
- Cobra Resources plc
- Ticker
- COBR
- Exchange
- Unavailable
- Region
- South Australia
- Primary commodity
- Copper
- Secondary commodities
- Gold
- Document categories
- Drill results, Other
- Extracted
- 2026-10-10 13:17:25 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Cobra Resources has extended copper anomalism at the Blue Rose prospect to over 2.2km and identified two new skarn units, Shadow Rose and Neptune Rose, at the Manna Hill project. While visual and pXRF observations show significant scale and continuity, laboratory assays are still pending and expected in 4-6 weeks.
Reasoning: The document reports significant geological expansion and new targets via visual/pXRF, but lacks the assay confirmation required for high-confidence economic assessment.
Positive factors
- extension of copper anomalism to 2.2km strike
- identification of two new skarn units (Shadow Rose and Neptune Rose)
- continuous anomalism up to 60m in Shadow Rose holes
- all three zones remain open
Negative factors
- current results are qualitative (visual/pXRF) and not laboratory assays
- true widths expected to be narrower than downhole lengths
- laboratory turnaround in Australia is currently slow
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 9
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The drilling at Blue Rose West (MHRC0029) extended the copper anomalism by 600m to beyond 2.2km strike.
Evidence · text
“extended copper anomalism at Blue Rose by 600m to beyond 2.2km of strike”
No QA/QC Disclosurenegative
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 current programme results are based on visual and pXRF observations; laboratory assays are still pending.
Evidence · text
“No grades have been reported from this programme. Its announcement states that visual observations are qualitative and that pXRF readings are semi-quantitative.”
Extracted facts
Stored fact records: 9. Some facts used in scoring do not have a stored record.
Drill Results (9)
RABR822Manna Hill · copperGrade: 2.2Grade Unit: %Intercept: 47 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- RABR822
- Project
- Manna Hill
- Commodity
- copper
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 2.2
- Grade Unit
- %
- Intercept
- 47 m
- From
- 11 m
- To
- 58 m
- Intercept Depth
- 11 m
Classification
- Sample Type
- drill
- Group ID
- RABR822:11-58
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: Historical assayed intersection providing context for the deposit's potential.
Positive factors
- strong grade of 2.2% Cu
Evidence · text
“47m at 2.2% Cu and 0.76 g/t Au from 11m in historic hole RABR822”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Stale Data Re-releasenegative
Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
Why it applies: the fact restates a prior release
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
RABR822Manna Hill · goldGrade: 0.76Grade Unit: g/tIntercept: 47 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- RABR822
- Project
- Manna Hill
- Commodity
- gold
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 0.76
- Grade Unit
- g/t
- Intercept
- 47 m
- From
- 11 m
- To
- 58 m
- Intercept Depth
- 11 m
Classification
- Sample Type
- drill
- Group ID
- RABR822:11-58
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: Historical gold grade reported alongside copper.
Evidence · text
“47m at 2.2% Cu and 0.76 g/t Au from 11m in historic hole RABR822”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Stale Data Re-releasenegative
Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
Why it applies: the fact restates a prior release
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
MHRC0018Manna Hill · copperGrade: 1.02Grade Unit: %Intercept: 74 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- MHRC0018
- Project
- Manna Hill
- 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
- MHRC0018:70-144
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2026-01-01T00:00:00.000Z
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: Historical drilling from January 2026.
Positive factors
- thick 74m intercept
Evidence · text
“74m at 1.02% Cu and 0.25 g/t Au from 70m in hole MHRC0018”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Stale Data Re-releasenegative
Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
Why it applies: the fact restates a prior release
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
MHRC0018Manna Hill · goldGrade: 0.25Grade Unit: g/tIntercept: 74 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- MHRC0018
- Project
- Manna Hill
- 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
- MHRC0018:70-144
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2026-01-01T00:00:00.000Z
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: Historical gold grade reported alongside copper.
Evidence · text
“74m at 1.02% Cu and 0.25 g/t Au from 70m in hole MHRC0018”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Stale Data Re-releasenegative
Historical results re-announced with no new assays or reinterpretation — low genuine novelty.
Why it applies: the fact restates a prior release
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
MHRC0029Manna Hill · copperIntercept: 32 mView all detailsHide details
Identity
- Hole ID
- MHRC0029
- Project
- Manna Hill
- Commodity
- copper
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Intercept
- 32 m
- From
- 52 m
- To
- 84 m
- Intercept Depth
- 52 m
Classification
- Sample Type
- drill
- Group ID
- MHRC0029:52-84
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- No
- Interp. Status
- low_confidence
- Historical
- No
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: New step-out hole showing visual copper anomalism but lacking assay confirmation.
Positive factors
- 32m anomalous interval
Negative factors
- no laboratory grade reported
- results are qualitative/pXRF only
Evidence · text
“hole MHRC0029 intersected anomalous copper over 32m from 52m”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
MHRC0025Manna Hill · copperIntercept: 60 mView all detailsHide details
Identity
- Hole ID
- MHRC0025
- Project
- Manna Hill
- Commodity
- copper
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Intercept
- 60 m
- From
- 10 m
- To
- 50 m
- Intercept Depth
- 10 m
Classification
- Sample Type
- drill
- Group ID
- MHRC0025:10-50
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- No
- Interp. Status
- low_confidence
- Historical
- No
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: New hole in Shadow Rose showing continuous copper oxides and sulphides via visual/pXRF.
Positive factors
- 60m continuous anomalism
Negative factors
- no laboratory grade reported
- results are qualitative/pXRF only
Evidence · text
“MHRC0025 logged strong copper oxides from 10m to 50m and copper sulphides to 70m”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
MHRC0024Manna Hill · copperIntercept: 6 mView all detailsHide details
Identity
- Hole ID
- MHRC0024
- Project
- Manna Hill
- Commodity
- copper
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Intercept
- 6 m
- From
- 56 m
- To
- 62 m
- Intercept Depth
- 56 m
Classification
- Sample Type
- drill
- Group ID
- MHRC0024:56-62
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- No
- Interp. Status
- low_confidence
- Historical
- No
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: New hole in Neptune Rose showing anomalous copper sulphides via visual/pXRF.
Positive factors
- intersected anomalous copper sulphides
Negative factors
- no laboratory grade reported
- results are qualitative/pXRF only
Evidence · text
“MHRC0024 intersected anomalous copper sulphides from 56m to 62m”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
MHRC0024Manna Hill · copperIntercept: 10 mView all detailsHide details
Identity
- Hole ID
- MHRC0024
- Project
- Manna Hill
- Commodity
- copper
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Intercept
- 10 m
- From
- 104 m
- To
- 114 m
- Intercept Depth
- 104 m
Classification
- Sample Type
- drill
- Group ID
- MHRC0024:104-114
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- No
- Interp. Status
- low_confidence
- Historical
- No
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: Second anomalous interval in MHRC0024 via visual/pXRF.
Positive factors
- intersected anomalous copper sulphides
Negative factors
- no laboratory grade reported
- results are qualitative/pXRF only
Evidence · text
“and again between 104m and 114m”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
MHRC0029Manna Hill · copperGrade: 1.02Grade Unit: %Intercept: 74 mView all detailsHide details
Identity
- Hole ID
- MHRC0029
- Project
- Manna Hill
- 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
Classification
- Sample Type
- drill
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- No
- Interp. Status
- low_confidence
- Historical
- No
Dates
- Event date
- 2026-10-10T00:00:00.000Z
Reasoning: New step-out hole showing visual copper anomalism but lacking assay confirmation.
Positive factors
- 32m anomalous interval
Negative factors
- no laboratory grade reported
- results are qualitative/pXRF only
Evidence · text
“74m at 1.02% Cu from 70m”
Tags used in scoring
QA/QC Disclosedpositive
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 Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "TL;DR Cobra Resources has extended copper anomalism at Blue Rose, part of its Manna Hill Copper Project in South Austral"
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.