Cobra Drills Three Manna Hill Systems: 7 Things You Need to Know
Original announcement by cruxinvestor on
- Company
- Cobra Resources
- Ticker
- COBR
- Exchange
- Unavailable
- Region
- South Australia
- Primary commodity
- Copper
- Secondary commodities
- Gold, Molybdenum, Silver, Uranium
- Document categories
- Drill results
- Extracted
- 2026-09-03 15:22:01 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Cobra Resources is advancing the Manna Hill project in South Australia with drilling active across three systems: Blue Rose, Anabama, and Netley Hill. While geological logging suggests a scalable porphyry system at Blue Rose, pending assays and a lack of specific metadata for some existing intersections remain key uncertainties.
Reasoning: The report highlights significant geological progress and multiple active drilling systems, but is tempered by the lack of recent assay results and missing provenance for several historical intersections.
Positive factors
- Blue Rose skarn shows high-grade copper-gold intercepts
- Deepening diamond drilling validates porphyry model via geological logging
- Unexpected copper oxide zone found to the south of skarn opens extension potential
- Anabama and Netley Hill already have established porphyry-style intersections
Negative factors
- Assays for recent diamond drilling are still outstanding
- Anabama and Netley Hill intersections lack hole IDs, depths, or dates
- Some targets (Round Hill, Welsh Prince) are only defined by radiometric anomalies without drilling
- One porphyry hole was abandoned due to intense pyrite
Facts used in scoring: 19
Classification and evidence
Apparent Width Onlynegative
Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.
Why it applies: The report mentions an oxide zone with no true width or orientation disclosed.
Evidence · text
“no company disclosure gives its true width or its orientation”
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 article does not mention any QA/QC protocols or laboratory certification for the reported intersections.
Evidence · text
“Cobra publishes none of these intersections with a hole identifier, a depth from surface, or a date”
Extracted facts
Stored fact records: 19. Some facts used in scoring do not have a stored record.
Drill Results (19)
Fact 1Blue Rose · copperGrade: 2.2Grade Unit: %Intercept: 47 mView all detailsHide details
Identity
- Project
- Blue Rose
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 2.2
- Grade Unit
- %
- Intercept
- 47 m
- From
- 11 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: High-grade copper intercept reported at Blue Rose.
Positive factors
- Strong copper grade
Evidence · text
“returned 47 meters (m) at 2.2% copper”
Fact 2Blue Rose · goldGrade: 0.78Grade Unit: g/tIntercept: 47 mView all detailsHide details
Identity
- Project
- Blue Rose
- Commodity
- gold
- Ticker
- COBR
Geometry
- Grade
- 0.78
- Grade Unit
- g/t
- Intercept
- 47 m
- From
- 11 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Gold grade accompanying the copper intercept at Blue Rose.
Positive factors
- Gold credits in copper intercept
Evidence · text
“0.78 grams per metric ton (g/t) gold from 11 m”
Fact 3Blue Rose · copperGrade: 0.6Grade Unit: %Intercept: 86 mView all detailsHide details
Identity
- Project
- Blue Rose
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 0.6
- Grade Unit
- %
- Intercept
- 86 m
- From
- 18 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: RC drilling results at Blue Rose.
Positive factors
- Wide intercept
Evidence · text
“returned 86 m at 0.60% copper”
Fact 4Blue Rose · goldGrade: 0.14Grade Unit: g/tIntercept: 86 mView all detailsHide details
Identity
- Project
- Blue Rose
- Commodity
- gold
- Ticker
- COBR
Geometry
- Grade
- 0.14
- Grade Unit
- g/t
- Intercept
- 86 m
- From
- 18 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Gold grade accompanying the copper intercept at Blue Rose.
Evidence · text
“0.14 g/t gold from 18 m”
Fact 5Blue Rose · copperGrade: 1.02Grade Unit: %Intercept: 74 mView all detailsHide details
Identity
- Project
- Blue Rose
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 1.02
- Grade Unit
- %
- Intercept
- 74 m
- From
- 72 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: RC drilling results at Blue Rose.
Positive factors
- Strong copper grade
Evidence · text
“74 m at 1.02% copper”
Fact 6Blue Rose · goldGrade: 0.25Grade Unit: g/tIntercept: 74 mView all detailsHide details
Identity
- Project
- Blue Rose
- Commodity
- gold
- Ticker
- COBR
Geometry
- Grade
- 0.25
- Grade Unit
- g/t
- Intercept
- 74 m
- From
- 72 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Gold grade accompanying the copper intercept at Blue Rose.
Evidence · text
“0.25 g/t gold from 72 m”
Fact 7Netley Hill · copperGrade: 0.1Grade Unit: %Intercept: 350 mView all detailsHide details
Identity
- Project
- Netley Hill
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 0.1
- Grade Unit
- %
- Intercept
- 350 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Porphyry-style intersection at Netley Hill with no provenance.
Positive factors
- Large width
Negative factors
- No hole ID or date provided
Evidence · text
“350 m at 0.1% copper”
Fact 8Netley Hill · molybdenumGrade: 0.015Grade Unit: %Intercept: 350 mView all detailsHide details
Identity
- Project
- Netley Hill
- Commodity
- molybdenum
- Ticker
- COBR
Geometry
- Grade
- 0.015
- Grade Unit
- %
- Intercept
- 350 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Trace molybdenum intersection at Netley Hill.
Negative factors
- No hole ID or date provided
Evidence · text
“0.015% molybdenum”
Fact 9Netley Hill · silverGrade: 1Grade Unit: g/tIntercept: 350 mView all detailsHide details
Identity
- Project
- Netley Hill
- Commodity
- silver
- Ticker
- COBR
Geometry
- Grade
- 1
- Grade Unit
- g/t
- Intercept
- 350 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Silver credit at Netley Hill.
Negative factors
- No hole ID or date provided
Evidence · text
“1 g/t silver”
Fact 10Netley Hill · copperGrade: 0.3Grade Unit: %Intercept: 24 mView all detailsHide details
Identity
- Project
- Netley Hill
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 0.3
- Grade Unit
- %
- Intercept
- 24 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Porphyry-style intersection at Netley Hill with no provenance.
Negative factors
- No hole ID or date provided
Evidence · text
“24 m at 0.3% copper”
Fact 11Netley Hill · molybdenumGrade: 0.02Grade Unit: %Intercept: 24 mView all detailsHide details
Identity
- Project
- Netley Hill
- Commodity
- molybdenum
- Ticker
- COBR
Geometry
- Grade
- 0.02
- Grade Unit
- %
- Intercept
- 24 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Trace molybdenum intersection at Netley Hill.
Negative factors
- No hole ID or date provided
Evidence · text
“0.02% molybdenum”
Fact 12Netley Hill · copperGrade: 0.1Grade Unit: %Intercept: 64 mView all detailsHide details
Identity
- Project
- Netley Hill
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 0.1
- Grade Unit
- %
- Intercept
- 64 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Porphyry-style intersection at Netley Hill with no provenance.
Negative factors
- No hole ID or date provided
Evidence · text
“64 m at 0.1% copper”
Fact 13Netley Hill · molybdenumGrade: 0.02Grade Unit: %Intercept: 64 mView all detailsHide details
Identity
- Project
- Netley Hill
- Commodity
- molybdenum
- Ticker
- COBR
Geometry
- Grade
- 0.02
- Grade Unit
- %
- Intercept
- 64 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Trace molybdenum intersection at Netley Hill.
Negative factors
- No hole ID or date provided
Evidence · text
“0.02% molybdenum”
Fact 14Netley Hill · molybdenumGrade: 0.05Grade Unit: %Intercept: 40 mView all detailsHide details
Identity
- Project
- Netley Hill
- Commodity
- molybdenum
- Ticker
- COBR
Geometry
- Grade
- 0.05
- Grade Unit
- %
- Intercept
- 40 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Molybdenum intersection at Netley Hill.
Negative factors
- No hole ID or date provided
Evidence · text
“40 m at 0.05% molybdenum”
Fact 15Anabama · copperGrade: 0.2Grade Unit: %Intercept: 27 mView all detailsHide details
Identity
- Project
- Anabama
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 0.2
- Grade Unit
- %
- Intercept
- 27 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Porphyry-style intersection at Anabama with no provenance.
Negative factors
- No hole ID or date provided
Evidence · text
“27 m at 0.2% copper”
Fact 16Anabama · molybdenumGrade: 0.06Grade Unit: %Intercept: 27 mView all detailsHide details
Identity
- Project
- Anabama
- Commodity
- molybdenum
- Ticker
- COBR
Geometry
- Grade
- 0.06
- Grade Unit
- %
- Intercept
- 27 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Molybdenum intersection at Anabama.
Negative factors
- No hole ID or date provided
Evidence · text
“0.06% molybdenum”
Fact 17Anabama · copperGrade: 0.4Grade Unit: %Intercept: 9 mView all detailsHide details
Identity
- Project
- Anabama
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 0.4
- Grade Unit
- %
- Intercept
- 9 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Porphyry-style intersection at Anabama with no provenance.
Negative factors
- No hole ID or date provided
Evidence · text
“9 m at 0.4% copper”
Fact 18Anabama · copperGrade: 0.13Grade Unit: %Intercept: 21 mView all detailsHide details
Identity
- Project
- Anabama
- Commodity
- copper
- Ticker
- COBR
Geometry
- Grade
- 0.13
- Grade Unit
- %
- Intercept
- 21 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Porphyry-style intersection at Anabama with no provenance.
Negative factors
- No hole ID or date provided
Evidence · text
“21 m at 0.13% copper”
Fact 19Anabama · molybdenumGrade: 0.095Grade Unit: %Intercept: 9 mView all detailsHide details
Identity
- Project
- Anabama
- Commodity
- molybdenum
- Ticker
- COBR
Geometry
- Grade
- 0.095
- Grade Unit
- %
- Intercept
- 9 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-03T00:00:00.000Z
Reasoning: Molybdenum intersection at Anabama.
Negative factors
- No hole ID or date provided
Evidence · text
“9 m at 0.095% molybdenum”
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.