Onyx Gold Expands Argus North Discovery Footprint - 208 m of 2.3 g/t Au, Including 25 m of 5.2 g/t Au
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, Other
- Extracted
- 2026-09-18 15:15:42 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Onyx Gold reported significant step-out drill results at the Argus North Zone of the Munro-Croesus Project, highlighted by a 208m intercept at 2.3 g/t Au in hole MC25-232. This result represents the widest continuous mineralization encountered at the discovery to date and extends the zone footprint by 50m to the south.
Reasoning: The drill hole MC25-232 delivered the widest continuous gold mineralization to date at Argus North, significantly expanding the discovery footprint and confirming structural controls.
Positive factors
- Significant width expansion (208m)
- Step-out drilling confirmed structural corridor
- High-grade sub-intervals (up to 15.2 g/t Au)
- Discovery footprint extended 50m south
Facts used in scoring: 7
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The 208m intercept extends the southern footprint of the Argus North zone by 50 metres.
Evidence · text
“extending the southern footprint of the zone by an additional 50 metres.”
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 use of blanks, standards, and certified labs (MSA and ALS).
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: The 1.0m interval at 11.0 g/t Au and 1.0m at 15.2 g/t Au are exceptionally high grade for this context.
Evidence · table
“15.2”
Context: 1.0
Extracted facts
Stored fact records: 7. Some facts used in scoring do not have a stored record.
Drill Results (7)
MC25-232Munro-Croesus · goldGrade: 2.3Grade Unit: g/tIntercept: 208 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- MC25-232
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 2.3
- Grade Unit
- g/t
- Intercept
- 208 m
- From
- 78 m
- To
- 286 m
- Hole Depth
- 366 m
- Intercept Depth
- 78 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- MC25-232:78-286
- Mining Method
- unknown
Location
- Location
- Argus North
- Azimuth
- 325 °
- Dip
- -55 °
- Loc. Source
- document
QA/QC
- Laboratory
- MSA Labs and ALS Geochemistry
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
- Historical Source Date
- 2025-10-07T00:00:00.000Z
Dates
- Event date
- 2025-11-17T00:00:00.000Z
Reasoning: Major discovery expansion result.
Positive factors
- Widest continuous interval to date
- Significant width (208m)
Evidence · text
“returning 208.0 meters ("m") grading 2.3 grams per tonne gold (" g/t Au ")”
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: "Onyx Gold Expands Argus North Discovery Footprint - 208 m of 2.3 g/t Au, Including 25 m of 5.2 g/t Au Onyx Gold Expands "
MC25-232Munro-Croesus · goldGrade: 5.2Grade Unit: g/tIntercept: 24.9 mView all detailsHide details
Identity
- Hole ID
- MC25-232
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 5.2
- Grade Unit
- g/t
- Intercept
- 24.9 m
- From
- 218.1 m
- To
- 243 m
- Hole Depth
- 366 m
- Intercept Depth
- 218.1 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- MC25-232:218.1-243
- Mining Method
- unknown
Location
- Location
- Argus North
- Azimuth
- 325 °
- Dip
- -55 °
- Loc. Source
- document
QA/QC
- Laboratory
- MSA Labs and ALS Geochemistry
- 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
- 2025-11-17T00:00:00.000Z
Reasoning: Strong high-grade component within the main intercept.
Positive factors
- High grade sub-interval
Evidence · table
“5.2”
Context: 24.9
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: "Onyx Gold Expands Argus North Discovery Footprint - 208 m of 2.3 g/t Au, Including 25 m of 5.2 g/t Au Onyx Gold Expands "
MC25-232Munro-Croesus · goldGrade: 15.2Grade Unit: g/tIntercept: 1 mView all detailsHide details
Identity
- Hole ID
- MC25-232
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 15.2
- Grade Unit
- g/t
- Intercept
- 1 m
- From
- 234 m
- To
- 235 m
- Hole Depth
- 366 m
- Intercept Depth
- 234 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- MC25-232:234-235
- Mining Method
- unknown
Location
- Location
- Argus North
- Azimuth
- 325 °
- Dip
- -55 °
- Loc. Source
- document
QA/QC
- Laboratory
- MSA Labs and ALS Geochemistry
- 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
- 2025-11-17T00:00:00.000Z
Reasoning: Very high grade narrow intercept.
Positive factors
- Bonanza grade
Evidence · table
“15.2”
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: "Onyx Gold Expands Argus North Discovery Footprint - 208 m of 2.3 g/t Au, Including 25 m of 5.2 g/t Au Onyx Gold Expands "
MC25-232Munro-Croesus · goldGrade: 3.4Grade Unit: g/tIntercept: 69.6 mView all detailsHide details
Identity
- Hole ID
- MC25-232
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 3.4
- Grade Unit
- g/t
- Intercept
- 69.6 m
- Hole Depth
- 366 m
Classification
- Sample Type
- drill
Location
- Azimuth
- 325 °
- Dip
- -55 °
QA/QC
- Laboratory
- MSA Labs and ALS Geochemistry
- 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
- 2025-11-17T00:00:00.000Z
Reasoning: Major discovery expansion result.
Positive factors
- Widest continuous interval to date
- Significant width (208m)
Evidence · text
“including 69.6 m grading 3.4 g/t Au”
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: "Onyx Gold Expands Argus North Discovery Footprint - 208 m of 2.3 g/t Au, Including 25 m of 5.2 g/t Au Onyx Gold Expands "
MC25-232Munro-Croesus · goldGrade: 3.3Grade Unit: g/tIntercept: 54.4 mView all detailsHide details
Identity
- Hole ID
- MC25-232
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 3.3
- Grade Unit
- g/t
- Intercept
- 54.4 m
- Hole Depth
- 366 m
Classification
- Sample Type
- drill
Location
- Azimuth
- 325 °
- Dip
- -55 °
QA/QC
- Laboratory
- MSA Labs and ALS Geochemistry
- 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
- 2025-11-17T00:00:00.000Z
Reasoning: Major discovery expansion result.
Positive factors
- Widest continuous interval to date
- Significant width (208m)
Evidence · text
“including 54.4 m grading 3.3 g/t Au”
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: "Onyx Gold Expands Argus North Discovery Footprint - 208 m of 2.3 g/t Au, Including 25 m of 5.2 g/t Au Onyx Gold Expands "
MC25-232Munro-Croesus · goldGrade: 5Grade Unit: g/tIntercept: 8 mView all detailsHide details
Identity
- Hole ID
- MC25-232
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 5
- Grade Unit
- g/t
- Intercept
- 8 m
- Hole Depth
- 366 m
Classification
- Sample Type
- drill
Location
- Azimuth
- 325 °
- Dip
- -55 °
QA/QC
- Laboratory
- MSA Labs and ALS Geochemistry
- 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
- 2025-11-17T00:00:00.000Z
Reasoning: Major discovery expansion result.
Positive factors
- Widest continuous interval to date
- Significant width (208m)
Evidence · text
“including 8.0 m grading 5.0 g/t Au”
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: "Onyx Gold Expands Argus North Discovery Footprint - 208 m of 2.3 g/t Au, Including 25 m of 5.2 g/t Au Onyx Gold Expands "
MC25-232Munro-Croesus · goldGrade: 7.2Grade Unit: g/tIntercept: 12 mView all detailsHide details
Identity
- Hole ID
- MC25-232
- Project
- Munro-Croesus
- Commodity
- gold
- Region
- canada_on
- Reported Region
- canada_on
- Ticker
- ONYX
Geometry
- Grade
- 7.2
- Grade Unit
- g/t
- Intercept
- 12 m
- Hole Depth
- 366 m
Classification
- Sample Type
- drill
Location
- Azimuth
- 325 °
- Dip
- -55 °
QA/QC
- Laboratory
- MSA Labs and ALS Geochemistry
- 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
- 2025-11-17T00:00:00.000Z
Reasoning: Major discovery expansion result.
Positive factors
- Widest continuous interval to date
- Significant width (208m)
Evidence · text
“including 12.0 m grading 7.2 g/t Au”
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: "Onyx Gold Expands Argus North Discovery Footprint - 208 m of 2.3 g/t Au, Including 25 m of 5.2 g/t Au Onyx Gold Expands "
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.