Pinnacle Provides Project Update for El Potrero as it Advances Towards a Production Decision
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
- Metallurgy, Permitting, Other
- Extracted
- 2026-09-12 18:50:14 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Pinnacle Silver and Gold Corp. provided an update on the El Potrero gold-silver project in Mexico, highlighting high preliminary gold recoveries of 95.1%. The company is advancing underground rehabilitation, submitting environmental permits, and conducting a second round of metallurgical testing to optimize the flowsheet.
Reasoning: The company is providing a comprehensive project update showing progress across metallurgy, permitting, and community relations, moving towards a production decision.
Positive factors
- High gold recovery (95.1%) from preliminary testing
- Robust head grades reported for metallurgical composites
- Progress on permitting and community agreements
- Transitioning to underground delineation drilling
Negative factors
- Requirement for powerline feasibility study
- Need to resolve land ownership technicality via new agreement
Facts used in scoring: 6
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The company is optimizing a flowsheet including gravity separation and leach tests for a plant.
Evidence · text
“determining the best parameters for processing will allow for the design of an efficient flow sheet”
QA/QC Disclosedpositive · Story-specific tag
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release names a Qualified Person (Mr. Jorge Ortega, P. Geo) and a Director (Mr. David Salari, P.Eng.) who have reviewed and approved the technical information.
Evidence · text
“Mr. Jorge Ortega, P. Geo, a Qualified Person... has reviewed, verified and approved for disclosure the technical information”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: the document describes a gravity route ("gravity")
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 3 distinct composites were tested
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Metallurgical Results (6)
scopingEl Potrero · goldRecovery: 95.1 %Head Grade: 7.7Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Test Work
- Program Status
- preliminary
- Test Type
- scoping
- Sample
- five-sample main zone composite
Recovery
- Recovery
- 95.1 %
- Recovery Basis
- unspecified
- Head Grade
- 7.7
- Head Grade Unit
- g/t
Lab
- Laboratory
- SGS Labs
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-26T00:00:00.000Z
Reasoning: High grade and high recovery reported for the main zone composite.
Positive factors
- High grade (7.7 g/t Au)
- High recovery (95.1%)
Evidence · text
“achieved 95.1% gold recoveries . Head assays of a five-sample main zone composite returned 7.7 g/t Au”
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 95.1% is at or above the exceptional band (95%)
Fact 2El Potrero · silverHead Grade: 116Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Test Work
- Sample
- five-sample main zone composite
Recovery
- Head Grade
- 116
- Head Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-26T00:00:00.000Z
Reasoning: Silver grade reported as part of the main zone composite.
Positive factors
- Robust silver grade in composite
Evidence · text
“7.7 g/t Au and 116 g/t Ag”
Fact 3El Potrero · goldHead Grade: 6.6Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Test Work
- Sample
- Estrella sample
Recovery
- Head Grade
- 6.6
- Head Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-26T00:00:00.000Z
Reasoning: Individual sample grade reported for metallurgical testing.
Positive factors
- Encouraging gold grade
Evidence · text
“Estrella sample returned 6.6 g/t Au”
Fact 4El Potrero · silverHead Grade: 169Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Test Work
- Sample
- Estrella sample
Recovery
- Head Grade
- 169
- Head Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-26T00:00:00.000Z
Reasoning: Individual sample grade reported for metallurgical testing.
Positive factors
- High silver grade
Evidence · text
“Estrella sample returned 6.6 g/t Au and 169 g/t Ag”
Fact 5El Potrero · goldHead Grade: 4.5Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Test Work
- Sample
- Capulin sample
Recovery
- Head Grade
- 4.5
- Head Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-26T00:00:00.000Z
Reasoning: Individual sample grade reported for metallurgical testing.
Positive factors
- Gold grade present
Evidence · text
“Capulin sample returned 4.5 g/t Au”
Fact 6El Potrero · silverHead Grade: 91Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- El Potrero
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- PINN
Test Work
- Sample
- Capulin sample
Recovery
- Head Grade
- 91
- Head Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-26T00:00:00.000Z
Reasoning: Individual sample grade reported for metallurgical testing.
Positive factors
- Silver grade present
Evidence · text
“Capulin sample returned 4.5 g/t Au and 91 g/t Ag”
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.