Cobra Extends Manna Hill Copper Corridor Beyond 2.2 Kilometers & Identifies 2 New Skarns
Original announcement by cruxinvestor on
- Company
- Cobra Resources
- Ticker
- COBR
- Exchange
- Unavailable
- Region
- South Australia
- Primary commodity
- Copper
- Secondary commodities
- Gold
- Document categories
- Other, Drill results
- Extracted
- 2026-10-09 12:02:49 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Cobra Resources has extended the Blue Rose copper corridor at the Manna Hill Project to over 2.2 km of strike and identified two new skarn systems, Shadow Rose and Neptune Rose. While visual and pXRF observations indicate significant copper anomalism, formal laboratory assay results are expected in 4 to 6 weeks.
Reasoning: The company has successfully extended a known copper corridor and identified new targets, but the lack of laboratory assays means the economic significance and exact grades are currently unverified.
Positive factors
- strike extension of Blue Rose corridor from 1.6km to >2.2km
- identification of two new skarn systems (Shadow Rose and Neptune Rose)
- continuous copper anomalism up to 60m in Shadow Rose
- program objective to establish a substantial resource footprint
Negative factors
- current observations are based on qualitative visual logging and semi-quantitative pXRF only
- actual assay grades are pending (4-6 weeks)
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 7
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The Blue Rose copper corridor was extended from 1.6km to over 2.2km of strike.
Evidence · text
“extends the Blue Rose copper-bearing corridor from approximately 1.6 kilometers to beyond 2.2 kilometers 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 program observations are based on visual logging and pXRF, with laboratory assays still pending.
Evidence · text
“The observations rest on visual logging and handheld portable X-ray fluorescence readings, with first assays expected in 4 to 6 weeks.”
Extracted facts
Stored fact records: 7. Some facts used in scoring do not have a stored record.
Drill Results (7)
Fact 1Manna Hill · copperIntercept: 32 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- 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
- Deposit Type
- skarn
- Program
- exploration
- Sample Type
- drill
- Group ID
- Manna_Hill:52-84
- Mining Method
- unknown
Location
- Location
- Blue Rose West
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- No
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- low_confidence
- Historical
- No
Dates
- Event date
- 2026-10-08T00:00:00.000Z
Reasoning: Preliminary pXRF observation of a 32m interval.
Positive factors
- anomalous copper over 32 meters
Negative factors
- observations based on pXRF and visual logging, not assays
Evidence · text
“A hole at Blue Rose West intersected anomalous copper over 32 meters from 52 meters”
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: "Recommended Latest Featured Mineros' 2.5x EBITDA Multiple Meets a Shareholder Base Still Being Built READ October 9, 202"
Fact 2Manna Hill · copperGrade: 2.2Grade Unit: %Intercept: 47 mHistorical resultNeeds review: drill_no_hole_idView all detailsHide details
Identity
- 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
- Manna_Hill:11-58
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-10-08T00:00:00.000Z
Reasoning: Historical high-grade intercept.
Positive factors
- high-grade intersection
Evidence · text
“47 meters at 2.2% copper”
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: "Recommended Latest Featured Mineros' 2.5x EBITDA Multiple Meets a Shareholder Base Still Being Built READ October 9, 202"
Fact 3Manna Hill · goldGrade: 0.76Grade Unit: g/tIntercept: 47 mHistorical resultNeeds review: drill_no_hole_idView all detailsHide details
Identity
- 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
- Manna_Hill:11-58
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-10-08T00:00:00.000Z
Reasoning: Historical gold grade in high-grade copper interval.
Positive factors
- accompanying gold in high-grade copper interval
Evidence · text
“0.76 grams per tonne gold from 11 meters”
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: "Recommended Latest Featured Mineros' 2.5x EBITDA Multiple Meets a Shareholder Base Still Being Built READ October 9, 202"
Fact 4Manna Hill · copperGrade: 1.02Grade Unit: %Intercept: 74 mHistorical resultNeeds review: drill_no_hole_idView all detailsHide details
Identity
- 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
- Manna_Hill:70-144
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-10-08T00:00:00.000Z
Reasoning: Historical intercept.
Positive factors
- significant width
Evidence · text
“74 meters at 1.02% copper”
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: "Recommended Latest Featured Mineros' 2.5x EBITDA Multiple Meets a Shareholder Base Still Being Built READ October 9, 202"
Fact 5Manna Hill · goldGrade: 0.25Grade Unit: g/tIntercept: 74 mHistorical resultNeeds review: drill_no_hole_idView all detailsHide details
Identity
- 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
- Manna_Hill:70-144
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-10-08T00:00:00.000Z
Reasoning: Historical gold grade.
Evidence · text
“0.25 grams per tonne gold from 70 meters”
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: "Recommended Latest Featured Mineros' 2.5x EBITDA Multiple Meets a Shareholder Base Still Being Built READ October 9, 202"
Fact 6Manna Hill · copperGrade: 0.63Grade Unit: %Intercept: 23 mHistorical resultNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Manna Hill
- Commodity
- copper
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 0.63
- Grade Unit
- %
- Intercept
- 23 m
- From
- 186 m
- To
- 209 m
- Intercept Depth
- 186 m
Classification
- Sample Type
- drill
- Group ID
- Manna_Hill:186-209
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-10-08T00:00:00.000Z
Reasoning: Historical deeper drilling result.
Positive factors
- indicative of larger porphyry system at depth
Evidence · text
“23 meters at 0.63% copper”
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: "Recommended Latest Featured Mineros' 2.5x EBITDA Multiple Meets a Shareholder Base Still Being Built READ October 9, 202"
Fact 7Manna Hill · goldGrade: 0.09Grade Unit: g/tIntercept: 23 mHistorical resultNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Manna Hill
- Commodity
- gold
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 0.09
- Grade Unit
- g/t
- Intercept
- 23 m
- From
- 186 m
- To
- 209 m
- Intercept Depth
- 186 m
Classification
- Sample Type
- drill
- Group ID
- Manna_Hill:186-209
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-10-08T00:00:00.000Z
Reasoning: Historical gold grade.
Evidence · text
“0.09 grams per tonne gold from 186 meters”
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: "Recommended Latest Featured Mineros' 2.5x EBITDA Multiple Meets a Shareholder Base Still Being Built READ October 9, 202"
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.