Cobra Resources Drills 74 Holes at Wudinna & Exercises Manna Hill Option
Original announcement by cruxinvestor on
- Company
- Cobra Resources
- Ticker
- COBR
- Exchange
- Unavailable
- Region
- South Australia
- Primary commodity
- Copper
- Secondary commodities
- Gold, Rare earth oxides
- Document categories
- Drill results, Agreement transaction, Metallurgy
- Extracted
- 2026-09-11 15:07:27 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Cobra Resources reported high-grade copper and gold intercepts at its Blue Rose discovery and formally exercised its option to acquire the Manna Hill Copper Project. The company also completed 74 sonic core holes at the Wudinna Heavy Rare Earth Project to support an upcoming maiden mineral resource estimate.
Reasoning: The company reported significant technical progress including high-grade copper intercepts at Blue Rose and the formal acquisition of the Manna Hill project, offsetting an increased operating loss.
Positive factors
- High-grade copper discovery at Blue Rose
- Exercise of option to acquire Manna Hill project
- Significant drilling progress at Wudinna
- Favorable metallurgical recovery results for rare earths
Negative factors
- Increased operating loss compared to prior year
- Assays for recent diamond drilling at Manna Hill are still pending
Facts used in scoring: 13
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: Drilling defined a high-grade mineralized flank at Head over approximately 5 kilometers.
Evidence · text
“Drilling defined a high-grade mineralized flank at Head over approximately 5 kilometers (km)”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release mentions diagnostic leach tests and metallurgical work with ANSTO.
Evidence · text
“Diagnostic leach tests on historical samples from Head in February 2026 confirmed recoveries”
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 13. Some facts used in scoring do not have a stored record.
Drill Results (12)
Blue Rose RCcopperGrade: 1.02Grade Unit: %Intercept: 74 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- 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 RC:70-144
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: 1.02% Cu over 74m is a strong discovery intercept.
Positive factors
- High-grade copper intercept
Evidence · text
“74 m at 1.02% copper and 0.25 grams per metric ton (g/t) gold from 70 m”
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
Blue Rose RCgoldGrade: 0.25Grade Unit: g/tIntercept: 74 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- 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 RC:70-144
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Gold grade is a low-grade byproduct in this copper intercept.
Evidence · text
“74 m at 1.02% copper and 0.25 grams per metric ton (g/t) gold from 70 m”
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
Blue Rose RCcopperGrade: 1Grade Unit: %Intercept: 62 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- 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 RC:62-124
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Broad high-grade copper intersection.
Positive factors
- Includes a high-grade sub-interval
Evidence · text
“62 m at 1.00% copper and 0.08 g/t gold from 62 m, including 30 m at 1.56% 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
Blue Rose RCcopperGrade: 1.56Grade Unit: %Intercept: 30 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- Commodity
- copper
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 1.56
- Grade Unit
- %
- Intercept
- 30 m
Classification
- Sample Type
- drill
- Group ID
- Blue Rose RC:62-124
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Stronger grade within the 62m intercept.
Positive factors
- High-grade sub-interval
Evidence · text
“including 30 m at 1.56% 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
Blue Rose RCgoldGrade: 0.08Grade Unit: g/tIntercept: 62 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- 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 RC:62-124
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Low-grade gold byproduct.
Evidence · text
“62 m at 1.00% copper and 0.08 g/t gold from 62 m”
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
Blue Rose RCcopperGrade: 0.6Grade Unit: %Intercept: 86 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- 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 RC:18-104
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Significant width copper intersection.
Evidence · text
“86 m at 0.60% copper and 0.14 g/t gold from 18 m”
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
Blue Rose RCgoldGrade: 0.14Grade Unit: g/tIntercept: 86 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- 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 RC:18-104
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Low-grade gold byproduct.
Evidence · text
“86 m at 0.60% copper and 0.14 g/t gold from 18 m”
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
Blue Rose RCcopperGrade: 0.78Grade Unit: %Intercept: 20 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- Commodity
- copper
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 0.78
- Grade Unit
- %
- Intercept
- 20 m
- From
- 38 m
- To
- 58 m
- Intercept Depth
- 38 m
Classification
- Sample Type
- drill
- Group ID
- Blue Rose RC:38-58
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Moderate copper intersection.
Evidence · text
“20 m at 0.78% copper and 0.13 g/t gold from 38 m”
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
Blue Rose RCgoldGrade: 0.13Grade Unit: g/tIntercept: 20 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Blue Rose RC
- Commodity
- gold
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 0.13
- Grade Unit
- g/t
- Intercept
- 20 m
- From
- 38 m
- To
- 58 m
- Intercept Depth
- 38 m
Classification
- Sample Type
- drill
- Group ID
- Blue Rose RC:38-58
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Low-grade gold byproduct.
Evidence · text
“20 m at 0.78% copper and 0.13 g/t gold from 38 m”
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
Head Prospectrare earth oxidesGrade: 1232Grade Unit: ppm TREOIntercept: 5.95 mView all detailsHide details
Identity
- Hole ID
- Head Prospect
- Commodity
- rare earth oxides
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 1232
- Grade Unit
- ppm TREO
- Intercept
- 5.95 m
- From
- 27.8 m
- To
- 33.75 m
- Intercept Depth
- 27.8 m
Classification
- Sample Type
- drill
- Group ID
- Head Prospect:27.8-33.75
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: High-grade TREO intercept.
Positive factors
- Includes a high-grade sub-interval
Evidence · text
“5.95 m at 1,232 ppm TREO from 27.8 m, including 1.45 m at 4,186 ppm TREO”
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
Head Prospectrare earth oxidesGrade: 4186Grade Unit: ppm TREOIntercept: 1.45 mView all detailsHide details
Identity
- Hole ID
- Head Prospect
- Commodity
- rare earth oxides
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 4186
- Grade Unit
- ppm TREO
- Intercept
- 1.45 m
Classification
- Sample Type
- drill
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Very high grade sub-interval.
Positive factors
- High-grade sub-interval
Evidence · text
“including 1.45 m at 4,186 ppm TREO”
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
Head Prospectrare earth oxidesGrade: 1783Grade Unit: ppm TREOIntercept: 2.17 mView all detailsHide details
Identity
- Hole ID
- Head Prospect
- Commodity
- rare earth oxides
- Region
- australia_sa
- Reported Region
- australia_sa
- Ticker
- COBR
Geometry
- Grade
- 1783
- Grade Unit
- ppm TREO
- Intercept
- 2.17 m
- From
- 30.4 m
- To
- 32.57 m
- Intercept Depth
- 30.4 m
Classification
- Sample Type
- drill
- Group ID
- Head Prospect:30.4-32.57
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Moderate TREO intercept.
Evidence · text
“2.17 m at 1,783 ppm TREO from 30.4 m”
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
Metallurgical Results (1)
Fact 1rare earth oxidesRecovery: 48 %Head Grade: 977Head Grade Unit: ppm TREOView all detailsHide details
Identity
- Commodity
- rare earth oxides
- Region
- australia_sa
- Reported Region
- South Australia
- Ticker
- COBR
Test Work
- Sample
- Composite from Head formation
Recovery
- Recovery
- 48 %
- Recovery Basis
- actual_test
- Head Grade
- 977
- Head Grade Unit
- ppm TREO
Reagents
- Reagent Notes
- Recoveries of 48% neodymium, 47% praseodymium, 52% dysprosium, and 54% terbium
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Diagnostic leach tests confirmed recoveries for key REEs.
Positive factors
- Confirmed recoveries from Pidinga formation
Evidence · text
“A composite grading 977 parts per million (ppm) total rare earth oxides (TREO) returned recoveries of 48% neodymium, 47% praseodymium, 52% dysprosium, and 54% terbium.”
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.