Mirasol Resources Starts Drilling at Virginia Silver Project in Argentina
Original announcement by tmx on
- Company
- Mirasol Resources Ltd.
- Ticker
- MRZ
- Exchange
- TSX
- Region
- Santa Cruz, Argentina
- Primary commodity
- Silver
- Secondary commodities
- None reported
- Document categories
- Drill results, Resource update, Agreement transaction
- Extracted
- 2026-09-18 11:24:04 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Mirasol Resources has commenced a 2,500m partner-funded diamond drill program at the Virginia silver project in Argentina. The company reported high-grade surface silver assays at the Margarita, Patricia, and Daniela veins, supporting the expansion of the existing NI 43-101 resource.
Reasoning: The announcement marks the start of a funded drilling phase at a project with a significant existing silver resource and very high-grade surface indicators.
Positive factors
- Commencement of partner-funded drilling program
- High-grade surface sampling results (up to 29,400 g/t Ag)
- Existing NI 43-101 indicated resource
- Strategic partnership with Silver Sands Resources
Facts used in scoring: 5
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: Surface samples returned exceptionally high silver grades, including 29,400 g/t Ag.
Evidence · text
“a high of 29,400 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 names a Qualified Person (Chris Ford) responsible for the technical information.
Evidence · text
“reviewed and approved by Chris Ford, CEng FIMMM, a senior consultant for the Company, who serves as a Qualified Person”
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The document reports an inferred resource component of 3.1 million ounces.
Evidence · text
“an inferred resource of 3.1 million ounces grading 207 g/t silver”
Extracted facts
Stored fact records: 5. Some facts used in scoring do not have a stored record.
Drill Results (3)
Fact 1silverGrade: 29400Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Region
- argentina
- Reported Region
- argentina
- Ticker
- MRZ
Geometry
- Grade
- 29400
- Grade Unit
- g/t
Classification
- Sample Type
- surface
Location
- Location
- Daniela
- Loc. Source
- document
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2020-10-29T00:00:00.000Z
Reasoning: Exceptional silver grade found in rock chip sampling at Daniela vein.
Positive factors
- Extreme high-grade surface sample
Evidence · text
“a high of 29,400 g/t Ag”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not 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 2silverGrade: 18800Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Region
- argentina
- Reported Region
- argentina
- Ticker
- MRZ
Geometry
- Grade
- 18800
- Grade Unit
- g/t
Classification
- Sample Type
- surface
Location
- Location
- Patricia
- Loc. Source
- document
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2020-10-29T00:00:00.000Z
Reasoning: Exceptional silver grade found in rock chip sampling at Patricia vein.
Positive factors
- Extreme high-grade surface sample
Evidence · text
“a high of 18,800 g/t Ag”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not 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 3silverGrade: 1730Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Region
- argentina
- Reported Region
- argentina
- Ticker
- MRZ
Geometry
- Grade
- 1730
- Grade Unit
- g/t
Classification
- Sample Type
- surface
Location
- Location
- Margarita
- Loc. Source
- document
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2020-10-29T00:00:00.000Z
Reasoning: High-grade silver sample at Margarita vein.
Positive factors
- High-grade surface sample
Evidence · text
“a high of 1,730 g/t Ag”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not 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
Resource Estimates (2)
indicatedVirginia · silverGrade: 310Grade Unit: g/tContained Metal: 11.9Contained Unit: mozHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Virginia
- Commodity
- silver
- Region
- argentina
- Reported Region
- Santa Cruz, Argentina
- Ticker
- MRZ
Resource scope
- Estimate type
- resource
- Resource group id
- resource:3e1e78ce4aeee5137c4d
Resource Data
- Category
- indicated
- Grade
- 310
- Grade Unit
- g/t
- Contained Metal
- 11.9
- Contained Unit
- moz
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2016-02-29T00:00:00.000Z
Dates
- Event date
- 2020-10-29T00:00:00.000Z
Reasoning: Historical indicated resource reported from a 2016 technical report.
Positive factors
- Significant indicated resource scale
Evidence · text
“hosts a NI 43-101 indicated resource of 11.9 million ounces grading 310 g/t silver”
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 4.7 years before this release
inferredVirginia · silverGrade: 207Grade Unit: g/tContained Metal: 3.1Contained Unit: mozHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Project
- Virginia
- Commodity
- silver
- Region
- argentina
- Reported Region
- Santa Cruz, Argentina
- Ticker
- MRZ
Resource scope
- Estimate type
- resource
- Resource group id
- resource:e08ebdd5c7eb0126b62f
Resource Data
- Category
- inferred
- Grade
- 207
- Grade Unit
- g/t
- Contained Metal
- 3.1
- Contained Unit
- moz
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2016-02-29T00:00:00.000Z
Dates
- Event date
- 2020-10-29T00:00:00.000Z
Reasoning: Historical inferred resource reported from a 2016 technical report.
Positive factors
- Provides resource upside
Negative factors
- Speculative category
Evidence · text
“an inferred resource of 3.1 million ounces grading 207 g/t silver”
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 4.7 years before this release
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.