DUN: Rockland delivers strong gold results
Original announcement by asx on
- Company
- Dundas Minerals Limited
- Ticker
- DUN
- Exchange
- ASX
- Region
- Western Australia
- Primary commodity
- Gold
- Secondary commodities
- None reported
- Document categories
- Drill results
- Extracted
- 2026-09-23 00:19:45 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Dundas Minerals Limited reported initial assay results from its RC drilling campaign at the Rockland Gold Project in Western Australia. Hole 26RKRC011 intersected two zones of gold mineralisation, including 4m @ 4.87 g/t Au, extending the interpreted shoots to 170m vertically below surface. The company also reported historical drill hole TLRC042 for the first time, which returned 5m @ 5.52 g/t Au, providing valuable geological context and supporting the interpreted north-south mineralised trend.
Reasoning: New RC drilling at the Rockland Gold Project extended gold mineralisation down-dip with high-grade intercepts, supported by the first-time reporting of historical data, enhancing the project's potential. While true widths are not known, the results confirm and extend the interpreted mineralised shoots.
Positive factors
- Extension of mineralisation down-dip
- High-grade intercepts reported
- Supports geological interpretation of north-south trend
- QA/QC disclosure for new drilling is comprehensive
- Competent Person sign-off for the announcement
Negative factors
- True widths are not known for reported intercepts
- Historical data does not establish continuity with new intercepts
- Original QA/QC for historical data is not documented
Facts used in scoring: 9
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: Intercepts of 4.87 g/t Au and 5.52 g/t Au are at the higher end of the moderate grade range for orogenic gold deposits (moderate >= 4 g/t), indicating significant mineralization.
Evidence · text
“4m @ 4.87 g/t Au from 200m”
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 reported intervals are downhole lengths, and while interpreted to approximate true widths, true widths are not explicitly stated or calculated.
Evidence · text
“Reported intervals are downhole lengths”
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The new intercepts extend the interpreted mineralised shoots to approximately 170m vertically below surface, beyond the base of previous drilling.
Evidence · text
“The new intercepts extend the interpreted mineralised shoots to approximately 170m vertically below surface.”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release includes a detailed JORC Table 1 for the 2026 drilling with explicit mention of certified lab (SGS Perth), QP sign-off, and QA/QC methods like standards and duplicates.
Evidence · text
“Samples submitted to SGS Perth for photon assay, considered a total gold technique. Certified references were inserted at a rate of 1 in 25. Field duplicates inserted at a rate of 1 in 50. QC results were within acceptable limits.”
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: The release clearly states that 4m composite results are reported using a 0.3 g/t Au cut-off grade and maximum 4m internal dilution.
Evidence · text
“Intercepts are 4m composite results reported using a 0.3 g/t Au cut-off grade and maximum 4m internal dilution.”
Historical Estimate Onlynegative · Story-specific tag
Estimate pre-dates or does not comply with current JORC/NI 43-101 standards — requires verification drilling.
Why it applies: The TLRC042 results are historical data from 2001, reported by Dundas for the first time, and are not new assays from the current campaign.
Evidence · text
“Historical Paddington hole TLRC042 also returned 5m @ 5.52 g/t Au from 114m. That historical result is reported by Dundas for the first time in this announcement”
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 JORC Table 1 for historical hole TLRC042 explicitly states that details on sample collection, splitting, sample mass, representativity checks, wet/dry condition, laboratory name, standards, blanks, duplicates, and umpire checks are not documented in the supplied archive.
Evidence · text
“The archive does not describe the collection or splitting procedure, sample mass, representativity checks or wet/dry condition.”
Extracted facts
Stored fact records: 9. Some facts used in scoring do not have a stored record.
Drill Results (9)
26RKRC011Rockland · goldGrade: 1.25Grade Unit: g/tIntercept: 12 mView all detailsHide details
Identity
- Hole ID
- 26RKRC011
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 1.25
- Grade Unit
- g/t
- Intercept
- 12 m
- From
- 168 m
- To
- 180 m
- Hole Depth
- 234 m
- Intercept Depth
- 168 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26RKRC011:168-180
- Mining Method
- underground
Location
- Location
- southern Rockland section
- Easting
- 332533
- Northing
- 6638760
- CRS
- GDA94 Zone 51
- Elevation
- 426 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- SGS Perth
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This intercept extends the known gold mineralisation down-dip, with a moderate grade over a significant length, supporting the project's potential.
Positive factors
- Intercept extends mineralisation down-dip
- Grade is moderate for orogenic gold
- Good continuity indicated by length
Negative factors
- True width not explicitly stated
- Results are from 4m composites
Evidence · table
“1.25”
Context: 12
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both stated
26RKRC011Rockland · goldGrade: 2.18Grade Unit: g/tIntercept: 4 mView all detailsHide details
Identity
- Hole ID
- 26RKRC011
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 2.18
- Grade Unit
- g/t
- Intercept
- 4 m
- From
- 176 m
- To
- 180 m
- Hole Depth
- 234 m
- Intercept Depth
- 168 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26RKRC011:176-180
- Mining Method
- underground
Location
- Location
- southern Rockland section
- Easting
- 332533
- Northing
- 6638760
- CRS
- GDA94 Zone 51
- Elevation
- 426 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- SGS Perth
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This higher-grade sub-interval within the broader mineralised zone indicates a more concentrated gold presence, contributing positively to the overall prospectivity.
Positive factors
- Higher-grade sub-interval within a broader zone
- Grade is at the weak end of the range for orogenic gold
Negative factors
- True width not explicitly stated
- Results are from 4m composites
Evidence · table
“2.18”
Context: 4
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both stated
26RKRC011Rockland · goldGrade: 4.87Grade Unit: g/tIntercept: 4 mView all detailsHide details
Identity
- Hole ID
- 26RKRC011
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 4.87
- Grade Unit
- g/t
- Intercept
- 4 m
- From
- 200 m
- To
- 204 m
- Hole Depth
- 234 m
- Intercept Depth
- 168 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26RKRC011:200-204
- Mining Method
- underground
Location
- Location
- southern Rockland section
- Easting
- 332533
- Northing
- 6638760
- CRS
- GDA94 Zone 51
- Elevation
- 426 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- SGS Perth
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This high-grade intercept significantly enhances the prospectivity of the Rockland project, extending mineralisation at depth and indicating strong gold presence.
Positive factors
- High-grade intercept for orogenic gold
- Extends mineralisation at depth
- Supports potential for significant mineralisation
Negative factors
- True width not explicitly stated
- Results are from 4m composites
Evidence · table
“4.87”
Context: 4
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both stated
26RKRC012Rockland · goldGrade: 0.93Grade Unit: g/tIntercept: 8 mView all detailsHide details
Identity
- Hole ID
- 26RKRC012
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 0.93
- Grade Unit
- g/t
- Intercept
- 8 m
- From
- 52 m
- To
- 60 m
- Hole Depth
- 198 m
- Intercept Depth
- 52 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26RKRC012:52-60
- Mining Method
- underground
Location
- Location
- western margin of the mineralised corridor
- Easting
- 332419
- Northing
- 6639014
- CRS
- GDA94 Zone 51
- Elevation
- 422 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- SGS Perth
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This intercept confirms gold mineralisation on the western margin of the corridor, expanding the known footprint, though at a lower grade than the main shoots.
Positive factors
- Confirms mineralisation in a new area (western margin)
Negative factors
- Grade is below moderate for orogenic gold
- True width not explicitly stated
- Results are from 4m composites
Evidence · table
“0.93”
Context: 8
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both stated
26RKRC013Rockland · goldGrade: 0.43Grade Unit: g/tIntercept: 4 mView all detailsHide details
Identity
- Hole ID
- 26RKRC013
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 0.43
- Grade Unit
- g/t
- Intercept
- 4 m
- From
- 104 m
- To
- 108 m
- Hole Depth
- 174 m
- Intercept Depth
- 104 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26RKRC013:104-108
- Mining Method
- underground
Location
- Location
- western margin of the mineralised corridor
- Easting
- 332459
- Northing
- 6639063
- CRS
- GDA94 Zone 51
- Elevation
- 422 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- SGS Perth
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This intercept confirms gold mineralisation on the western margin, but the low grade suggests it is less significant than other results.
Positive factors
- Confirms mineralisation in a new area (western margin)
Negative factors
- Grade is low for orogenic gold
- True width not explicitly stated
- Results are from 4m composites
Evidence · table
“0.43”
Context: 4
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both stated
26RKRC013Rockland · goldGrade: 0.5Grade Unit: g/tIntercept: 4 mView all detailsHide details
Identity
- Hole ID
- 26RKRC013
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 0.5
- Grade Unit
- g/t
- Intercept
- 4 m
- From
- 112 m
- To
- 116 m
- Hole Depth
- 174 m
- Intercept Depth
- 104 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26RKRC013:112-116
- Mining Method
- underground
Location
- Location
- western margin of the mineralised corridor
- Easting
- 332459
- Northing
- 6639063
- CRS
- GDA94 Zone 51
- Elevation
- 422 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- SGS Perth
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This intercept confirms gold mineralisation on the western margin, but the low grade suggests it is less significant than other results.
Positive factors
- Confirms mineralisation in a new area (western margin)
Negative factors
- Grade is low for orogenic gold
- True width not explicitly stated
- Results are from 4m composites
Evidence · table
“0.50”
Context: 4
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both stated
26RKRC013Rockland · goldGrade: 0.48Grade Unit: g/tIntercept: 4 mView all detailsHide details
Identity
- Hole ID
- 26RKRC013
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 0.48
- Grade Unit
- g/t
- Intercept
- 4 m
- From
- 164 m
- To
- 168 m
- Hole Depth
- 174 m
- Intercept Depth
- 104 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- 26RKRC013:164-168
- Mining Method
- underground
Location
- Location
- western margin of the mineralised corridor
- Easting
- 332459
- Northing
- 6639063
- CRS
- GDA94 Zone 51
- Elevation
- 422 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- SGS Perth
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This intercept confirms gold mineralisation on the western margin, but the low grade suggests it is less significant than other results.
Positive factors
- Confirms mineralisation in a new area (western margin)
Negative factors
- Grade is low for orogenic gold
- True width not explicitly stated
- Results are from 4m composites
Evidence · table
“0.48”
Context: 4
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both stated
TLRC042Rockland · goldGrade: 1.9Grade Unit: g/tIntercept: 1 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TLRC042
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 1.9
- Grade Unit
- g/t
- Intercept
- 1 m
- From
- 78 m
- To
- 79 m
- Hole Depth
- 120 m
- Intercept Depth
- 78 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- TLRC042:78-79
- Mining Method
- underground
Location
- Easting
- 332280
- Northing
- 6638600
- CRS
- AMG84 Zone 51 (AGD84)
- Elevation
- 410 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- medium
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2001-05-25T00:00:00.000Z
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This historical intercept provides valuable context for the geological interpretation, confirming gold mineralisation in the area, despite limitations in its original QA/QC documentation.
Positive factors
- Provides historical exploration context
- Grade is at the weak end of the range for orogenic gold
Negative factors
- Historical data with undocumented original QA/QC
- True width not explicitly stated
- Does not establish continuity with new intercepts
Evidence · table
“1.90”
Context: 1
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both 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
TLRC042Rockland · goldGrade: 5.52Grade Unit: g/tIntercept: 5 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TLRC042
- Project
- Rockland
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- DUN
Geometry
- Grade
- 5.52
- Grade Unit
- g/t
- Intercept
- 5 m
- From
- 114 m
- To
- 119 m
- Hole Depth
- 120 m
- Intercept Depth
- 78 m
Classification
- Deposit Type
- orogenic
- Program
- exploration
- Sample Type
- drill
- Group ID
- TLRC042:114-119
- Mining Method
- underground
Location
- Easting
- 332280
- Northing
- 6638600
- CRS
- AMG84 Zone 51 (AGD84)
- Elevation
- 410 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- medium
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates
Compositing
- Cutoff Grade
- 0.3
- Cutoff Unit
- g/t Au
- Dilution Disclosed
- Yes
- Max Dilution
- 4 m
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2001-05-25T00:00:00.000Z
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: This high-grade historical intercept is contextually important due to its proximity to new down-dip drilling, providing strong support for the geological interpretation of the mineralised shoots.
Positive factors
- High-grade historical intercept for orogenic gold
- Provides valuable geological context for new drilling
- Position aligns with new down-dip drilling
Negative factors
- Historical data with undocumented original QA/QC
- True width not explicitly stated
- Does not establish continuity with new intercepts
Evidence · table
“5.52”
Context: 5
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
Compositing Transparentpositive
Cut-off grade and internal dilution rules are clearly stated for reported intervals.
Why it applies: cutoff_grade and internal dilution are both 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
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.