Spartan Metals Reports Significant Silver-Antimony-Copper Assays with Grades up to 1,927 g/t Ag, 0.67% Sb, and 1.83% Cu from Past Producing Antelope Mine, Nevada
Original announcement by tmx on
- Company
- Spartan Metals Corp.
- Ticker
- W
- Exchange
- TSX
- Region
- Nevada
- Primary commodity
- Silver
- Secondary commodities
- Antimony, Copper, Arsenic
- Document categories
- Drill results, Other
- Extracted
- 2026-09-15 06:41:16 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Spartan Metals has reported high-grade silver, antimony, and copper assays from the Antelope Mine in Nevada, with silver grades reaching 1,927 g/t. Surface sampling identified a mineralized footprint of approximately 1.3 km by 0.6 km, a substantial expansion over the historical 50-meter strike length.
Reasoning: High-grade silver and copper assays from surface sampling and backpack drilling significantly expand the known mineralized footprint at the Antelope Mine.
Positive factors
- High-grade silver intercepts exceeding 1,000 g/t
- Significant lateral extension of mineralized footprint (1.3 km vs 50 m)
- Presence of strategic critical mineral antimony
- QA/QC protocols disclosed with certified lab
Negative factors
- True width not yet determined
- Drilling is limited to small-diameter backpack core
Facts used in scoring: 6
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: Silver grades up to 1,927 g/t Ag are exceptionally high.
Evidence · text
“Grades up to 1,927 g/t Ag”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release mentions American Assay Lab (AAL) as a certified lab and details QA/QC methods like CRM standards and duplicates.
Evidence · text
“AAL undertakes its own internal coarse and pulp duplicate analysis”
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: Surface sampling defined a footprint 1.3 km long, much larger than the historical 50m mine extent.
Evidence · text
“significantly larger than the existing mine extent which produced along strike of approximately 50 meters”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Drill Results (6)
STS-26-008Eagle · silverGrade: 688Grade Unit: g/tIntercept: 0.3 mView all detailsHide details
Identity
- Hole ID
- STS-26-008
- Project
- Eagle
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- usa_nv
- Ticker
- W
Geometry
- Grade
- 688
- Grade Unit
- g/t
- Intercept
- 0.3 m
- From
- 0 m
- To
- 0.3 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- drill
- Group ID
- STS-26-008:0-0.3
- Mining Method
- unknown
Location
- Location
- Antelope vein
- Loc. Source
- document
QA/QC
- Laboratory
- American Assay Lab (AAL)
- 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
- 2026-06-25T00:00:00.000Z
Reasoning: 688 g/t Ag is a strong intercept for a preliminary backpack drill sample.
Positive factors
- High grade silver for backpack drilling
Negative factors
- Small diameter backpack core
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: "Highlights: Backpack core drill sample returned 688 g/t silver (Ag) over 0.3 meters (m), with 0.67% copper (Cu) , 1,336 "
STS-26-008Eagle · copperGrade: 0.67Grade Unit: %Intercept: 0.3 mView all detailsHide details
Identity
- Hole ID
- STS-26-008
- Project
- Eagle
- Commodity
- copper
- Region
- usa_nv
- Reported Region
- usa_nv
- Ticker
- W
Geometry
- Grade
- 0.67
- Grade Unit
- %
- Intercept
- 0.3 m
- From
- 0 m
- To
- 0.3 m
- Intercept Depth
- 0 m
Classification
- Sample Type
- drill
- Group ID
- STS-26-008:0-0.3
- Mining Method
- unknown
Location
- Location
- Antelope vein
- Loc. Source
- document
QA/QC
- Laboratory
- American Assay Lab (AAL)
- 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
- 2026-06-25T00:00:00.000Z
Reasoning: 0.67% Cu is a moderate grade accompanying the silver.
Positive factors
- Co-occurrence with high silver
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: "Highlights: Backpack core drill sample returned 688 g/t silver (Ag) over 0.3 meters (m), with 0.67% copper (Cu) , 1,336 "
An-2026-001Eagle Project · silverGrade: 1510Grade Unit: g/tView all detailsHide details
Identity
- Hole ID
- An-2026-001
- Project
- Eagle Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- W
Geometry
- Grade
- 1510
- Grade Unit
- g/t
Classification
- Sample Type
- channel
- Mining Method
- unknown
Location
- Location
- Antelope Mine
- Loc. Source
- document
QA/QC
- Laboratory
- American Assay Lab (AAL)
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: 1,510 g/t Ag is an exceptionally high grade channel sample.
Positive factors
- Bonanza grade silver
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: "Highlights: Backpack core drill sample returned 688 g/t silver (Ag) over 0.3 meters (m), with 0.67% copper (Cu) , 1,336 "
An-2026-001Eagle Project · copperGrade: 1.64Grade Unit: %View all detailsHide details
Identity
- Hole ID
- An-2026-001
- Project
- Eagle Project
- Commodity
- copper
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- W
Geometry
- Grade
- 1.64
- Grade Unit
- %
Classification
- Sample Type
- channel
- Mining Method
- unknown
Location
- Location
- Antelope Mine
- Loc. Source
- document
QA/QC
- Laboratory
- American Assay Lab (AAL)
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: 1.64% Cu is a strong grade for a surface channel sample.
Positive factors
- Strong copper grade
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: "Highlights: Backpack core drill sample returned 688 g/t silver (Ag) over 0.3 meters (m), with 0.67% copper (Cu) , 1,336 "
TG-RK-GA-001Eagle Project · silverGrade: 1927Grade Unit: g/tView all detailsHide details
Identity
- Hole ID
- TG-RK-GA-001
- Project
- Eagle Project
- Commodity
- silver
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- W
Geometry
- Grade
- 1927
- Grade Unit
- g/t
Classification
- Sample Type
- surface
- Mining Method
- unknown
Location
- Location
- Antelope Mine
- Loc. Source
- document
QA/QC
- Laboratory
- American Assay Lab (AAL)
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: 1,927 g/t Ag is an exceptional silver grade.
Positive factors
- Bonanza Intercept
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: "Highlights: Backpack core drill sample returned 688 g/t silver (Ag) over 0.3 meters (m), with 0.67% copper (Cu) , 1,336 "
TG-RK-GA-001Eagle Project · copperGrade: 1.48Grade Unit: %View all detailsHide details
Identity
- Hole ID
- TG-RK-GA-001
- Project
- Eagle Project
- Commodity
- copper
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- W
Geometry
- Grade
- 1.48
- Grade Unit
- %
Classification
- Sample Type
- surface
- Mining Method
- unknown
Location
- Location
- Antelope Mine
- Loc. Source
- document
QA/QC
- Laboratory
- American Assay Lab (AAL)
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, duplicates, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-25T00:00:00.000Z
Reasoning: 1.48% Cu is a strong grade for surface rock chips.
Positive factors
- Strong copper grade
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: "Highlights: Backpack core drill sample returned 688 g/t silver (Ag) over 0.3 meters (m), with 0.67% copper (Cu) , 1,336 "
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.