Pinnacle Reopens Additional Historic Mine Workings at El Potrero and Samples up to 26.1 g/t Au and 511 g/t Ag
Original announcement by tmx on
- Company
- Pinnacle Silver and Gold Corp.
- Ticker
- PINN
- Exchange
- TSX
- Region
- Durango, Mexico
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Drill results
- Extracted
- 2026-09-12 18:32:57 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Pinnacle Silver and Gold Corp. has reported high-grade gold and silver channel sampling from newly accessible historic mine workings at the El Potrero project in Mexico. The results, including up to 26.1 g/t Au and 511 g/t Ag, demonstrate vertical continuity of mineralization within the Dos de Mayo vein system.
Reasoning: Significant high-grade gold and silver intercepts from new underground channel sampling, demonstrating vertical continuity in a known epithermal system.
Positive factors
- High-grade intercepts
- Vertical continuity demonstrated
- QA/QC disclosed
- Step-out extension
Facts used in scoring: 6
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: 26.1 g/t Au is exceptionally high for an epithermal system.
Evidence · text
“26.1 g/t Au and 511 g/t Ag over 0.50 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 QA/QC procedures including certified lab (SGS), standards, and blanks.
Evidence · text
“This has included common industry QA/QC procedures to monitor the quality of the assay database, including inserting certified reference material samples and blank samples”
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: New workings extend mineralization up dip and along strike to the northwest.
Evidence · text
“The newly accessible workings... extend approximately 93 metres along the northwest strike of the Dos de Mayo vein”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Drill Results (6)
Fact 1El Potrero · goldGrade: 10.76Grade Unit: g/tIntercept: 1.3 mView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Geometry
- Grade
- 10.76
- Grade Unit
- g/t
- Intercept
- 1.3 m
Classification
- Deposit Type
- epithermal
- Program
- exploration
- Sample Type
- channel
- Mining Method
- underground
Location
- Location
- Dos de Mayo Norte
- Loc. Source
- document
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-04T00:00:00.000Z
Reasoning: Solid gold grade over a 1.3m interval in an epithermal setting.
Positive factors
- Strong grade for epithermal system
Evidence · text
“assays up to 10.76 g/t Au and 215 g/t Ag over 1.3 metres”
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: "About the Potrero Property El Potrero is located in the prolific Sierra Madre Occidental of western Mexico and lies with"
Fact 2El Potrero · silverGrade: 215Grade Unit: g/tIntercept: 1.3 mView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Geometry
- Grade
- 215
- Grade Unit
- g/t
- Intercept
- 1.3 m
Classification
- Deposit Type
- epithermal
- Program
- exploration
- Sample Type
- channel
- Group ID
- null:null-null
- Mining Method
- underground
Location
- Location
- Dos de Mayo Norte
- Loc. Source
- document
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-04T00:00:00.000Z
Reasoning: Significant silver grade accompanying the gold intercept.
Positive factors
- Strong silver grade
Evidence · text
“10.76 g/t Au and 215 g/t Ag over 1.3 metres”
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: "About the Potrero Property El Potrero is located in the prolific Sierra Madre Occidental of western Mexico and lies with"
Fact 3El Potrero · goldGrade: 26.1Grade Unit: g/tIntercept: 0.5 mView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Geometry
- Grade
- 26.1
- Grade Unit
- g/t
- Intercept
- 0.5 m
Classification
- Deposit Type
- epithermal
- Program
- exploration
- Sample Type
- channel
- Group ID
- null:null-null
- Mining Method
- underground
Location
- Location
- Dos de Mayo Norte
- Loc. Source
- document
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-04T00:00:00.000Z
Reasoning: 26.1 g/t Au is an exceptional grade for an epithermal system.
Positive factors
- Bonanza Intercept
Evidence · text
“26.1 g/t Au and 511 g/t Ag over 0.50 metres”
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: "About the Potrero Property El Potrero is located in the prolific Sierra Madre Occidental of western Mexico and lies with"
Fact 4El Potrero · silverGrade: 511Grade Unit: g/tIntercept: 0.5 mView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Geometry
- Grade
- 511
- Grade Unit
- g/t
- Intercept
- 0.5 m
Classification
- Deposit Type
- epithermal
- Program
- exploration
- Sample Type
- channel
- Group ID
- null:null-null
- Mining Method
- underground
Location
- Location
- Dos de Mayo Norte
- Loc. Source
- document
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-04T00:00:00.000Z
Reasoning: Very high silver grade in a sub-meter interval.
Positive factors
- Bonanza Intercept
Evidence · text
“26.1 g/t Au and 511 g/t Ag over 0.50 metres”
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: "About the Potrero Property El Potrero is located in the prolific Sierra Madre Occidental of western Mexico and lies with"
Fact 5El Potrero · goldGrade: 5.41Grade Unit: g/tIntercept: 0.8 mView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Geometry
- Grade
- 5.41
- Grade Unit
- g/t
- Intercept
- 0.8 m
Classification
- Deposit Type
- epithermal
- Program
- exploration
- Sample Type
- channel
- Group ID
- null:null-null
- Mining Method
- underground
Location
- Location
- South Raise
- Loc. Source
- document
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-04T00:00:00.000Z
Reasoning: Good gold grade in a narrow interval.
Positive factors
- Strong grade
Evidence · text
“5.41 g/t Au and 230 g/t Ag over 0.80 metres in the South Raise”
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: "About the Potrero Property El Potrero is located in the prolific Sierra Madre Occidental of western Mexico and lies with"
Fact 6El Potrero · silverGrade: 230Grade Unit: g/tIntercept: 0.8 mView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Geometry
- Grade
- 230
- Grade Unit
- g/t
- Intercept
- 0.8 m
Classification
- Deposit Type
- epithermal
- Program
- exploration
- Sample Type
- channel
- Group ID
- null:null-null
- Mining Method
- underground
Location
- Location
- South Raise
- Loc. Source
- document
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-04T00:00:00.000Z
Reasoning: Significant silver grade in a narrow interval.
Positive factors
- Strong silver grade
Evidence · text
“5.41 g/t Au and 230 g/t Ag over 0.80 metres in the South Raise”
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: "About the Potrero Property El Potrero is located in the prolific Sierra Madre Occidental of western Mexico and lies with"
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.