BTR: Visible Gold Continues From TMH Extensional Drilling
Original announcement by asx on
- Company
- Brightstar Resources Limited
- Ticker
- BTR
- Exchange
- ASX
- Region
- Western Australia
- Primary commodity
- Gold
- Secondary commodities
- Lead, Iron ore, Copper, Zinc, Molybdenum
- Document categories
- Drill results
- Extracted
- 2026-09-30 00:11:00 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Brightstar Resources announced that extensional diamond drilling at its Two Mile Hill deposit, part of the Sandstone Gold Project, intersected a significantly wider mineralized tonalite unit with numerous visible gold occurrences. While assays are pending for the newly drilled holes TMHDD26005 and TMHDD26006, the observations suggest substantial potential for Mineral Resource upside at depth. The company also referenced previously reported strong gold intercepts from drillhole TMHRCD26020.
Reasoning: Extensional drilling at Two Mile Hill confirmed a significantly wider mineralized tonalite unit with numerous visible gold occurrences, suggesting substantial potential for resource upside at depth, though actual assay results for these new holes are still pending.
Positive factors
- Visible gold occurrences in new drilling
- Extensional drilling confirms significant widening of mineralized tonalite unit
- Deposit remains open at depth, indicating resource upside
- Strong historical drill intercepts referenced
Negative factors
- Assay results are pending for all new drill holes
- Visible gold is not a substitute for quantitative assay data
Facts used in scoring: 8
Classification and evidence
Visible Goldpositive · Story-specific tag
No canonical definition is currently available.
Why it applies: The document highlights 'Regular occurrences of visible gold intersected in deep diamond drilling' and lists 40 occurrences in Table 1.
Evidence · text
“Regular occurrences of visible gold intersected in deep diamond drilling at the Two Mile Hill deposit”
Assays Pendingnegative · Story-specific tag
No canonical definition is currently available.
Why it applies: The document explicitly states that assays are pending for all holes in the current program.
Evidence · text
“Assays are pending for all holes”
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The drilling is described as 'extensional drilling' and a 'significant extension of the previously interpreted Two Mile Hill deposit at depth'.
Evidence · text
“This is a significant extension of the previously interpreted Two Mile Hill deposit at depth”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The document includes a detailed JORC Code, 2012 Edition – Table 1, outlining sampling techniques, quality control procedures, and competent person statements.
Evidence · text
“APPENDIX 1: JORC CODE, 2012 EDITION – TABLE 1”
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 historical intercept from TMHRCD26020 is described as a 'broad, unconstrained intercept', indicating that true width is not known or stated.
Evidence · text
“broad, unconstrained intercept of 305.4m @ 1.82g/t Au from 351.9m”
Extracted facts
Stored fact records: 8. Some facts used in scoring do not have a stored record.
Drill Results (8)
TMHRCD26020Two Mile Hill · goldGrade: 1.82Grade Unit: g/tIntercept: 305.4 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TMHRCD26020
- Project
- Two Mile Hill
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- BTR
Geometry
- Grade
- 1.82
- Grade Unit
- g/t
- Intercept
- 305.4 m
- From
- 351.9 m
- To
- 657.3 m
- Intercept Depth
- 351.9 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- TMHRCD26020:351.9-657.3
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Compositing
- Dilution Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2026-08-03T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This is a very strong historical gold intercept with a high grade-width product over a significant length, indicating substantial mineralization, though it was previously reported.
Positive factors
- Exceptional grade-width product for gold
- Very broad intercept length
- High gold grade
Negative factors
- Result is historical and previously reported
- Intercept described as unconstrained, implying true width is not known
Evidence · text
“305.4m @ 1.82g/t Au from 351.9m”
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
TMHRCD26020Two Mile Hill · goldGrade: 9.68Grade Unit: g/tIntercept: 17.5 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TMHRCD26020
- Project
- Two Mile Hill
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- BTR
Geometry
- Grade
- 9.68
- Grade Unit
- g/t
- Intercept
- 17.5 m
- From
- 351.9 m
- To
- 369.4 m
- Intercept Depth
- 351.9 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- TMHRCD26020:351.9-369.4
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Compositing
- Dilution Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2026-08-03T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This is an exceptionally high-grade gold intercept over a good width, representing a bonanza zone within the broader historical intercept.
Positive factors
- Bonanza grade gold intercept
- Strong grade-width product
- High gold grade
Negative factors
- Result is historical and previously reported
Evidence · text
“17.5m @ 9.68g/t Au from 351.9m”
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
TMHRCD26020Two Mile Hill · goldGrade: 8.59Grade Unit: g/tIntercept: 13.4 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TMHRCD26020
- Project
- Two Mile Hill
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- BTR
Geometry
- Grade
- 8.59
- Grade Unit
- g/t
- Intercept
- 13.4 m
- From
- 531 m
- To
- 544.4 m
- Intercept Depth
- 531 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- TMHRCD26020:531-544.4
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Compositing
- Dilution Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2026-08-03T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This is another exceptionally high-grade gold intercept over a good width, representing a bonanza zone within the broader historical intercept.
Positive factors
- Bonanza grade gold intercept
- Strong grade-width product
- High gold grade
Negative factors
- Result is historical and previously reported
Evidence · text
“13.4m @ 8.59g/t Au from 531.0m”
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
TMHRCD26020Two Mile Hill · goldGrade: 4.11Grade Unit: g/tIntercept: 34.6 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TMHRCD26020
- Project
- Two Mile Hill
- Commodity
- gold
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- BTR
Geometry
- Grade
- 4.11
- Grade Unit
- g/t
- Intercept
- 34.6 m
- From
- 586.7 m
- To
- 621.3 m
- Intercept Depth
- 586.7 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- TMHRCD26020:586.7-621.3
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Compositing
- Dilution Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2026-08-03T00:00:00.000Z
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: This is a strong historical gold intercept over a significant width, contributing to the overall mineralization of the zone.
Positive factors
- Strong grade gold intercept
- Very good grade-width product
- Good gold grade
Negative factors
- Result is historical and previously reported
Evidence · text
“34.6m @ 4.11g/t Au from 586.7m”
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
TMHDD26003Two Mile HillHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TMHDD26003
- Project
- Two Mile Hill
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- BTR
Geometry
- Hole Depth
- 1039.2 m
Classification
- Program
- exploration
- Sample Type
- drill
Location
- Easting
- 723362
- Northing
- 6892451
- Elevation
- 519 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Compositing
- Dilution Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: Collar information for a previously reported drill hole is provided, but no new assay results are announced in this document.
Negative factors
- Assays pending for this hole (previously reported)
- Collar information is for a previously reported hole
Evidence · table
“723362”
Context: TMHDD26003
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
TMHDD26004Two Mile HillHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TMHDD26004
- Project
- Two Mile Hill
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- BTR
Geometry
- Hole Depth
- 888.3 m
Classification
- Program
- exploration
- Sample Type
- drill
Location
- Easting
- 723353
- Northing
- 6892546
- Elevation
- 519 m
- Azimuth
- 265 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Compositing
- Dilution Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: Collar information for a previously reported drill hole is provided, but no new assay results are announced in this document.
Negative factors
- Assays pending for this hole (previously reported)
- Collar information is for a previously reported hole
Evidence · table
“723353”
Context: TMHDD26004
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
TMHDD26005Two Mile HillHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TMHDD26005
- Project
- Two Mile Hill
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- BTR
Geometry
- Hole Depth
- 901.4 m
Classification
- Program
- exploration
- Sample Type
- drill
Location
- Easting
- 723362
- Northing
- 6892592
- Elevation
- 522 m
- Azimuth
- 267 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Compositing
- Dilution Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: New collar information is provided for an extensional drill hole that intersected visible gold and ended in mineralization, but quantitative assay results are still pending.
Positive factors
- New collar information for extensional drilling
- Visible gold occurrences logged in this hole
- Hole ended in mineralized tonalite, indicating open mineralization
Negative factors
- Assay results are pending for this hole
Evidence · table
“723362”
Context: TMHDD26005
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
TMHDD26006Two Mile HillHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- TMHDD26006
- Project
- Two Mile Hill
- Region
- australia_wa
- Reported Region
- australia_wa
- Ticker
- BTR
Geometry
- Hole Depth
- 1010.9 m
Classification
- Program
- exploration
- Sample Type
- drill
Location
- Easting
- 723436
- Northing
- 6892529
- Elevation
- 519 m
- Azimuth
- 268 °
- Dip
- -64 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Compositing
- Dilution Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-09-29T00:00:00.000Z
Reasoning: New collar information is provided for an extensional drill hole that intersected visible gold and ended in mineralization, but quantitative assay results are still pending.
Positive factors
- New collar information for extensional drilling
- Visible gold occurrences logged in this hole
- Hole ended in mineralized tonalite, indicating open mineralization
Negative factors
- Assay results are pending for this hole
Evidence · table
“723436”
Context: TMHDD26006
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
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.