Encouraging Diamond indicator Chemistry reported from the Arbutus kimberlite discovery, Diagras project, NT
Original announcement by tmx on
- Company
- Arctic Star Exploration Corp.
- Ticker
- ADD
- Exchange
- TSX
- Region
- Northwest Territories
- Primary commodity
- Diamond
- Secondary commodities
- None reported
- Document categories
- Drill results, Other
- Extracted
- 2026-09-19 17:04:42 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Arctic Star Exploration Corp. reported highly encouraging diamond indicator mineral (DIM) chemistry from the Arbutus kimberlite discovery at the Diagras project in the Northwest Territories. Analysis by C.F. Mineral Research Ltd identified high-quality indicator minerals, including Lherzolite-sourced pyropes, which are associated with large diamond potential.
Reasoning: The report provides highly positive geochemical indicator mineral data (DIMs) from core samples, which is a strong proxy for diamond potential in kimberlite discoveries, though it is not a direct diamond grade assay.
Positive factors
- Excellent diamond indicator mineral (DIM) chemistry reported
- Presence of Lherzolite-sourced indicators suggesting large diamond potential
- High abundance of G10 and G1 indicators
- Previous news release confirmed diamond bearing status
Negative factors
- Low picroilmenite count (only 4) makes it difficult to predict oxidation state
Facts used in scoring: 3
Classification and evidence
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release names a specific laboratory (C.F. Mineral Research Ltd) and a Qualified Person (Buddy Doyle, AUSIMM).
Evidence · text
“analysis and classification has been completed by C.F. Mineral Research Ltd... The Qualified Person for this news release is Buddy Doyle, AUSIMM”
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: The company mentions the Arbutus kimberlite lies south of the historic Finlay kimberlite.
Evidence · text
“Arbutus lies to the south of the Finlay kimberlite”
Extracted facts
Stored fact records: 3. Some facts used in scoring do not have a stored record.
Drill Results (3)
DG-2022-08DiagrasView all detailsHide details
Identity
- Hole ID
- DG-2022-08
- Project
- Diagras
- Region
- northwest territories
- Reported Region
- northwest territories
- Ticker
- ADD
Classification
- Sample Type
- drill
Location
- Location
- Arbutus kimberlite
- Loc. Source
- document
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2022-10-03T00:00:00.000Z
Reasoning: Sample contains specific indicator mineral suites (G10* pyrope, G1* eclogitic garnet, Di$* clinopyroxene) associated with large diamond potential.
Positive factors
- Contains Lherzolite-sourced minerals known for large diamonds
Evidence · text
“Sample DG-2022-08 weighing 970 gms contained only a single G10* pyrope and a single G1* eclogitic garnet. However the sample contained 92 Di* chromites and 36 Di* olivines.”
Tags used in scoring
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: qaqc_disclosed is not 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
DG-2022-09BDiagrasView all detailsHide details
Identity
- Hole ID
- DG-2022-09B
- Project
- Diagras
- Region
- northwest territories
- Reported Region
- northwest territories
- Ticker
- ADD
Classification
- Sample Type
- drill
Location
- Location
- Arbutus kimberlite
- Loc. Source
- document
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2022-10-03T00:00:00.000Z
Reasoning: High abundance of G1* eclogitic garnets and presence of Lherzolite-sourced clinopyroxenes.
Positive factors
- Dominated by G1* eclogitic garnets from diamond bearing source
Evidence · text
“Sample DG-2022-09B, weighing 810 gms also only contained a single G10* pyrope garnet and no Di*G9/11 pyrope garnets but contained 68 Di* chromites, 41 Di* olivines and 67 G1* ecologitic garnets.”
Tags used in scoring
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: qaqc_disclosed is not 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
DG-2022-09ADiagrasView all detailsHide details
Identity
- Hole ID
- DG-2022-09A
- Project
- Diagras
- Region
- northwest territories
- Reported Region
- northwest territories
- Ticker
- ADD
Classification
- Sample Type
- drill
Location
- Location
- Arbutus kimberlite
- Loc. Source
- document
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2022-10-03T00:00:00.000Z
Reasoning: This phase is described as being 'loaded with diamonds' and potentially containing very large diamonds due to the specific indicator mineral suite.
Positive factors
- Best indicator results encountered by the lab
- High abundance of G10* pyropes and G1* eclogitic garnets
- Contains Lherzolite source of large diamonds
Evidence · text
“Sample DG-2022-09A weighing 1220 gms contained 73 G10* pyropes, 110 Di* chromites, 44 Di* olivines, 32 G1* ecologitic garnets.”
Tags used in scoring
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: qaqc_disclosed is not 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.