Onyx Gold Discovers New Gold Zone 250 meters from Argus North
Original announcement by tmx on
- Company
- Onyx Gold Corp.
- Ticker
- ONYX
- Exchange
- TSX
- Region
- Ontario
- Primary commodity
- Gold
- Secondary commodities
- Silver, Copper, Lead, Zinc
- Document categories
- Drill results, Agreement transaction
- Extracted
- 2026-09-18 15:09:48 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Onyx Gold has announced the discovery of the Argus West gold zone, located 250m from the Argus North discovery at the Munro-Croesus Project in Ontario. Drilling intersected high-grade gold, including 19.7 g/t Au and 13.7 g/t Au, with visible gold observed in several intervals.
Reasoning: Significant new discovery (Argus West) with high-grade intercepts and visible gold, demonstrating structural control and expansion potential near a known discovery.
Positive factors
- Discovery of new gold zone (Argus West) 250m from Argus North
- High-grade intercepts including 19.7 g/t Au and 13.7 g/t Au
- Visible gold observed in multiple holes
- Step-out drilling successfully extending mineralization strike and depth
- Discovery occurs in both volcanic and sedimentary host rocks
Facts used in scoring: 9
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: Drill holes MC25-213 and MC25-199 are described as step-out holes 250m and 430m from Argus North.
Evidence · text
“Results reported today from Argus West include two step-out drill holes, MC25-213 and MC25-199”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release details specific QA/QC protocols, including blanks, standards, duplicates, and certified lab accreditation (ISO 17025).
Evidence · text
“The Company maintains a robust QA/QC program that includes the collection and analysis of duplicate samples and the insertion of blanks and standards”
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: 19.7 g/t Au intercept is exceptionally high for an orogenic gold system.
Evidence · table
“19.7”
Context: 1.0
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: The new Argus West zone is located 250m from the existing Argus North discovery.
Evidence · text
“discovery of a new zone of near-surface gold mineralization, 250 meters (" m ") southwest of the Argus North Zone”
Extracted facts
Stored fact records: 9. Some facts used in scoring do not have a stored record.
Drill Results (9)
MC25-213Munro-Croesus · goldGrade: 2.1Grade Unit: g/tIntercept: 21.2 mView all detailsHide details
Identity
- Hole ID
- MC25-213
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 2.1
- Grade Unit
- g/t
- Intercept
- 21.2 m
- From
- 13.8 m
- To
- 35 m
- Hole Depth
- 249 m
- Intercept Depth
- 9.8 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- MC25-213:13.8-35
- Mining Method
- underground
Location
- Location
- North Zone
- Azimuth
- 0 °
- Dip
- -45 °
- Loc. Confidence
- medium
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Strong step-out intercept with multiple high-grade sub-intervals and visible gold.
Positive factors
- Significant width and grade
- Visible gold observed
Evidence · text
“21.2 m grading 2.1 g/t Au, in drill hole MC25-213”
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
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
MC25-213Munro-Croesus · goldGrade: 3Grade Unit: g/tIntercept: 14 mView all detailsHide details
Identity
- Hole ID
- MC25-213
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 3
- Grade Unit
- g/t
- Intercept
- 14 m
- From
- 21 m
- To
- 35 m
- Intercept Depth
- 21 m
Classification
- Sample Type
- drill
- Group ID
- MC25-213:21-35
Location
- Location
- North Zone
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: High-grade sub-interval within the main intercept.
Evidence · table
“3.0”
Context: 14.0
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
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
MC25-213Munro-Croesus · goldGrade: 19.7Grade Unit: g/tIntercept: 1 mView all detailsHide details
Identity
- Hole ID
- MC25-213
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 19.7
- Grade Unit
- g/t
- Intercept
- 1 m
- From
- 27 m
- To
- 28 m
- Intercept Depth
- 27 m
Classification
- Sample Type
- drill
- Group ID
- MC25-213:27-28
Location
- Location
- North Zone
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Exceptional high-grade intercept with visible gold.
Positive factors
- Bonanza grade
- Visible gold
Evidence · table
“19.7”
Context: 1.0
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
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
MC25-213Munro-Croesus · goldGrade: 5.1Grade Unit: g/tIntercept: 5 mView all detailsHide details
Identity
- Hole ID
- MC25-213
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 5.1
- Grade Unit
- g/t
- Intercept
- 5 m
- From
- 64.8 m
- To
- 69.8 m
- Intercept Depth
- 64.8 m
Classification
- Sample Type
- drill
- Group ID
- MC25-213:64.8-69.8
Location
- Location
- North Zone
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Strong high-grade sub-interval.
Evidence · table
“5.1”
Context: 5.0
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
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
MC25-213Munro-Croesus · goldGrade: 13.7Grade Unit: g/tIntercept: 1.5 mView all detailsHide details
Identity
- Hole ID
- MC25-213
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 13.7
- Grade Unit
- g/t
- Intercept
- 1.5 m
- From
- 64.8 m
- To
- 66.3 m
- Intercept Depth
- 64.8 m
Classification
- Sample Type
- drill
- Group ID
- MC25-213:64.8-66.3
Location
- Location
- North Zone
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: High-grade intercept with visible gold.
Positive factors
- High grade
- Visible gold
Evidence · table
“13.7”
Context: 1.5
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
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
MC25-199Munro-Croesus · goldGrade: 0.5Grade Unit: g/tIntercept: 38 mView all detailsHide details
Identity
- Hole ID
- MC25-199
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 0.5
- Grade Unit
- g/t
- Intercept
- 38 m
- From
- 55.5 m
- To
- 93.5 m
- Intercept Depth
- 55.5 m
Classification
- Sample Type
- drill
- Group ID
- MC25-199:55.5-93.5
Location
- Location
- North Zone
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Moderate grade over a significant width.
Evidence · table
“0.5”
Context: 38.0
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
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
MC25-199Munro-Croesus · goldGrade: 1Grade Unit: g/tIntercept: 14 mView all detailsHide details
Identity
- Hole ID
- MC25-199
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 1
- Grade Unit
- g/t
- Intercept
- 14 m
- From
- 67.5 m
- To
- 81.5 m
- Intercept Depth
- 67.5 m
Classification
- Sample Type
- drill
- Group ID
- MC25-199:67.5-81.5
Location
- Location
- North Zone
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Sub-interval within the main intercept.
Evidence · table
“1.0”
Context: 14.0
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
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
MC25-199Munro-Croesus · goldGrade: 2.4Grade Unit: g/tIntercept: 3 mView all detailsHide details
Identity
- Hole ID
- MC25-199
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 2.4
- Grade Unit
- g/t
- Intercept
- 3 m
- From
- 78.5 m
- To
- 81.5 m
- Intercept Depth
- 78.5 m
Classification
- Sample Type
- drill
- Group ID
- MC25-199:78.5-81.5
Location
- Location
- North Zone
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: High-grade sub-interval.
Evidence · table
“2.4”
Context: 3.0
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
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
MC25-215Munro-Croesus · goldGrade: 4.8Grade Unit: g/tIntercept: 1.5 mView all detailsHide details
Identity
- Hole ID
- MC25-215
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 4.8
- Grade Unit
- g/t
- Intercept
- 1.5 m
- From
- 303.5 m
- To
- 305 m
- Intercept Depth
- 303.5 m
Classification
- Sample Type
- drill
- Group ID
- MC25-215:303.5-305
Location
- Location
- West Zone
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: High-grade narrow intercept confirming new fertile environment.
Evidence · table
“4.8”
Context: 1.5
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
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: proximity is offered as the value premise: "The Company is aggressively following up on this discovery at Argus West with 50 m spaced step-out drill holes, immediat"
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.