Excellon Defines Multi-Stage Gold-Silver System Linking Pierina, Shafra and Mallay Deeps at Mallay Mine
Original announcement by tmx on
- Company
- Excellon Resources Inc.
- Ticker
- EXN
- Exchange
- TSX
- Region
- central Peru
- Primary commodity
- Gold
- Secondary commodities
- Silver, Copper, Zinc, Lead
- Document categories
- Drill results, Other
- Extracted
- 2026-09-12 04:55:01 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Excellon Resources has reported updated geological interpretations at the Mallay Silver Mine in Peru, identifying a multi-stage gold-silver system. Surface sampling at the Shafra Zone returned gold up to 62.38 g/t, and the company plans 3,500 metres of underground drilling to test the Pierina Vein extension and the 'Mallay Deeps' target.
Reasoning: The release reports significant high-grade surface gold anomalies and provides a compelling geological model linking existing workings to new deep targets, though it relies partly on unverified historical data.
Positive factors
- High-grade surface gold intercepts (62.38 g/t Au)
- Widespread gold anomaly (96% of samples)
- Structural continuity identified linking multiple targets
- QA/QC protocols and accredited lab mentioned
Negative factors
- Surface sampling is not necessarily representative
- Historical data from Buenaventura not verified by QP
Facts used in scoring: 2
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: 62.38 g/t Au is exceptionally high for surface sampling.
Evidence · text
“maximum value of 62.38 g/t Au”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release mentions accredited laboratory (Certimin) and specific QA/QC methods (blanks, standards, duplicates).
Evidence · text
“chain of custody was maintained to Certimin Laboratories, Lima (accredited). Excellon inserts blanks, certified reference materials and duplicates”
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: The strategy relies on the structural link between Pierina, Shafra, and the Mallay Deeps targets.
Evidence · text
“The integration of Pierina, Shafra, and Mallay Deeps provides a more complete picture of Mallay's multi-phase mineralizing system.”
Extracted facts
Stored fact records: 2. Some facts used in scoring do not have a stored record.
Drill Results (2)
Fact 1Mallay Silver Mine · goldGrade: 62.38Grade Unit: g/tView all detailsHide details
Identity
- Project
- Mallay Silver Mine
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- EXN
Geometry
- Grade
- 62.38
- Grade Unit
- g/t
Classification
- Program
- exploration
- Sample Type
- surface
Location
- Location
- Shafra Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Certimin Laboratories
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- blanks, standards, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-11-26T00:00:00.000Z
Reasoning: 62.38 g/t Au is an exceptional grade for surface sampling, though representativeness is cautioned.
Positive factors
- Exceptional grade for surface sampling
Negative factors
- Surface grab samples are not necessarily representative
Evidence · text
“maximum value of 62.38 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
Fact 2Mallay Silver Mine · goldGrade: 0.4Grade Unit: g/tView all detailsHide details
Identity
- Project
- Mallay Silver Mine
- Commodity
- gold
- Region
- peru
- Reported Region
- central Peru
- Ticker
- EXN
Geometry
- Grade
- 0.4
- Grade Unit
- g/t
Classification
- Program
- exploration
- Sample Type
- surface
Location
- Location
- Shafra Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Certimin Laboratories
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- blanks, standards, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-11-26T00:00:00.000Z
Reasoning: Indicates widespread low-grade gold enrichment across the sampling area.
Positive factors
- High percentage of anomalous samples
Evidence · text
“22 % > 0.40 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
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.