Silver Breccias at San Marcial Span 1 Kilometer, Still Open at Depth
Original announcement by cruxinvestor on
- Company
- GR Silver Mining
- Ticker
- GRSL
- Exchange
- Unavailable
- Region
- Mexico
- Primary commodity
- Silver
- Secondary commodities
- Zinc, Gold
- Document categories
- Drill results, Other
- Extracted
- 2026-09-12 00:43:39 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
GR Silver Mining has reported successful step-out drill results at the San Marcial Area of the Plomosas Project in Mexico, extending the silver-bearing breccia system by 300m southeast and 75m deeper. The results include high-grade silver intercepts, with one interval containing a 0.7m sub-interval at 1,344 g/t Ag.
Reasoning: Significant step-out drilling has extended the mineralized breccia system 300m southeast and 75m deeper, with high-grade silver intercepts including a bonanza sub-interval of 1,344 g/t Ag.
Positive factors
- Step-Out Extension
- Bonanza Intercept
Facts used in scoring: 12
Extracted facts
Stored fact records: 12. Some facts used in scoring do not have a stored record.
Drill Results (12)
Fact 1San Marcial · silverGrade: 162Grade Unit: g/tIntercept: 16.1 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 162
- Grade Unit
- g/t
- Intercept
- 16.1 m
- From
- 375.05 m
- To
- 391.15 m
- Intercept Depth
- 375.05 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:375.05-391.15
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: High-grade silver intercept of 162 g/t over 16.1m, including a bonanza sub-interval.
Positive factors
- Bonanza Intercept
Evidence · text
“16.1 m at 162 grams per metric ton (g/t) silver starting 375.05 m downhole”
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
Fact 2San Marcial · silverGrade: 1344Grade Unit: g/tIntercept: 0.7 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 1344
- Grade Unit
- g/t
- Intercept
- 0.7 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:375.05-391.15
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Exceptional bonanza silver grade in a sub-interval.
Positive factors
- Bonanza Intercept
Evidence · text
“including 0.7 m at 1,344 g/t 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
Fact 3San Marcial · silverGrade: 42.35Intercept: 42.35 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 42.35
- Intercept
- 42.35 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:0-42.35
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Wide lower-grade zone containing high-grade intercepts.
Evidence · text
“inside a wider 42.35 m zone grading 95 g/t 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
Fact 4San Marcial · silverGrade: 95Grade Unit: g/tIntercept: 42.35 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 95
- Grade Unit
- g/t
- Intercept
- 42.35 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:0-42.35
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Wide lower-grade zone containing high-grade intercepts.
Evidence · text
“inside a wider 42.35 m zone grading 95 g/t 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
Fact 5San Marcial · silverGrade: 11.7Grade Unit: mIntercept: 11.7 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 11.7
- Grade Unit
- m
- Intercept
- 11.7 m
- From
- 275.55 m
- To
- 287.25 m
- Intercept Depth
- 275.55 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:275.55-287.25
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Strong silver intercept reported in step-out drilling.
Evidence · text
“11.7 m at 147 g/t silver starting 275.55 m downhole”
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
Fact 6San Marcial · silverGrade: 147Grade Unit: g/tIntercept: 11.7 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 147
- Grade Unit
- g/t
- Intercept
- 11.7 m
- From
- 275.55 m
- To
- 287.25 m
- Intercept Depth
- 275.55 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:275.55-287.25
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Strong silver intercept reported in step-out drilling.
Evidence · text
“11.7 m at 147 g/t silver starting 275.55 m downhole”
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
Fact 7San Marcial · silverGrade: 29.8Grade Unit: mIntercept: 29.8 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 29.8
- Grade Unit
- m
- Intercept
- 29.8 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:0-29.8
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Wide lower-grade zone containing high-grade intercepts.
Evidence · text
“29.8 m at 87 g/t 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
Fact 8San Marcial · silverGrade: 87Grade Unit: g/tIntercept: 29.8 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 87
- Grade Unit
- g/t
- Intercept
- 29.8 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:0-29.8
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Wide lower-grade zone containing high-grade intercepts.
Evidence · text
“29.8 m at 87 g/t 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
Fact 9San Marcial · silverGrade: 36Grade Unit: mIntercept: 36 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 36
- Grade Unit
- m
- Intercept
- 36 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:0-36.0
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Broad, weak silver interval.
Evidence · text
“returned a broad, weak 36.0 m interval at 15 g/t 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
Fact 10San Marcial · silverGrade: 15Grade Unit: g/tIntercept: 36 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- San Marcial
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 15
- Grade Unit
- g/t
- Intercept
- 36 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:0-36.0
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Broad, weak silver interval.
Evidence · text
“returned a broad, weak 36.0 m interval at 15 g/t 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
Fact 11Parallel Breccia target · silverGrade: 340Grade Unit: g/tIntercept: 2.85 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Parallel Breccia target
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 340
- Grade Unit
- g/t
- Intercept
- 2.85 m
- From
- 63 m
- To
- 65.85 m
- Intercept Depth
- 63 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:63.0-65.85
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: High-grade silver intercept at the Parallel Breccia target.
Evidence · text
“returned 2.85 m at 340 g/t silver and 0.32 g/t gold from 63.00 m depth”
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
Fact 12Parallel Breccia target · goldGrade: 0.32Grade Unit: g/tIntercept: 2.85 mNeeds review: drill_no_hole_idView all detailsHide details
Identity
- Project
- Parallel Breccia target
- Commodity
- gold
- Region
- mexico
- Reported Region
- mexico
- Ticker
- GRSL
Geometry
- Grade
- 0.32
- Grade Unit
- g/t
- Intercept
- 2.85 m
- From
- 63 m
- To
- 65.85 m
- Intercept Depth
- 63 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- unknown:63.0-65.85
QA/QC
- QA/QC Disclosed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- drill_no_hole_id
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-09-11T00:00:00.000Z
Reasoning: Low-grade gold intercept at the Parallel Breccia target.
Evidence · text
“returned 2.85 m at 340 g/t silver and 0.32 g/t gold from 63.00 m depth”
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.