Vizsla Silver Corp.: Exhibit 99.1 - Filed by newsfilecorp.com
Original announcement by research on
- Company
- Unavailable
- Ticker
- VZLA
- Exchange
- TSX
- Region
- Sinaloa, Mexico
- Primary commodity
- Silver
- Secondary commodities
- Gold, Lead, Zinc, Silicon
- Document categories
- Resource update, Other
- Extracted
- 2026-11-04 11:57:05 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Vizsla Silver reported an updated NI 43-101 mineral resource estimate for its 100% owned Panuco silver-gold project in Sinaloa, Mexico, effective September 1, 2023. Indicated resources increased to 9.5 Mt at 289 g/t Ag, 2.41 g/t Au, 0.27% Pb and 0.84% Zn, while inferred resources increased to 12.2 Mt at 239 g/t Ag, 1.93 g/t Au, 0.29% Pb and 1.03% Zn. The release also discloses the 150 g/t AgEq cut-off, metal price/recovery assumptions, QA/QC procedures and QP sign-off.
Reasoning: This is a substantial updated mineral resource estimate for the Panuco silver-gold project, with meaningful growth in both indicated and inferred ounces and clear NI 43-101/QP disclosure. The announcement is positive but still a resource update rather than an economic study or reserve conversion.
Positive factors
- Updated mineral resource estimate for Panuco
- Indicated resources increased from 104.8 to 155.8 Moz AgEq
- Inferred resources increased from 114.1 to 169.6 Moz AgEq
- QA/QC, certified lab, and QP sign-off disclosed
Negative factors
- Resource remains entirely indicated and inferred, with no measured category
- Cut-off and metal-equivalent assumptions are disclosed, but the estimate is still a resource not a reserve
- Primary disclosure is an updated estimate rather than new drilling results
Facts used in scoring: 8
Classification and evidence
JORC Compliantpositive
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: The release states the estimate is prepared in accordance with NI 43-101 and references CIM Definition Standards, not JORC.
Evidence · text
“prepared in accordance with NI 43-101”
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The updated mineral resource estimate is explicitly stated to be completed in accordance with NI 43-101.
Evidence · text
“in accordance with National Instrument 43-101”
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: A named Qualified Person signed off on the estimate and reviewed the release.
Evidence · text
“Mr. Armitage has reviewed and approved the technical contents of this news release.”
Cut Off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: The resource is reported at a stated 150 g/t AgEq cut-off.
Evidence · text
“Mineral resources are reported at a base case cut-off grade of 150 g/t AgEq.”
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The announcement is an updated mineral resource estimate compared with the prior January 2023 estimate.
Evidence · text
“including a comparison to the previous mineral resource estimate released in January 2023”
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 describes the laboratory, certification, control samples and assay methods.
Evidence · text
“Quality Assurance / Quality Control”
Infill Drillingneutral · Story-specific tag
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: The release states that 178 new infill/expansion holes were included in the updated estimate.
Evidence · text
“178 new infill/expansion holes”
Extracted facts
Stored fact records: 8. Some facts used in scoring do not have a stored record.
Resource Estimates (8)
indicatedPanuco · silverTonnes: 9500000Grade: 289Grade Unit: g/tContained Metal: 88192Contained Unit: kozView all detailsHide details
Identity
- Project
- Panuco
- Commodity
- silver
- Region
- mexico
- Reported Region
- Sinaloa, Mexico
- Ticker
- VZLA
Resource scope
- Estimate type
- resource
- Effective date
- 2023-09-01T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Allan Armitage
- Resource group id
- resource:235d7d987ca1c5d911a8
- Deposit or zone
- Total Indicated
- Mining method
- underground
- Ownership percent
- 100 %
Resource Data
- Category
- indicated
- Tonnes
- 9500000
- Grade
- 289
- Grade Unit
- g/t
- Contained Metal
- 88192
- Contained Unit
- koz
- Cutoff Grade
- 150
- Cutoff Unit
- g/t AgEq
Prior Estimate
- Resource Date
- 2023-09-01
Metal Equivalent
- Metal Eq. Grade
- 511
- Metal Eq. Unit
- g/t AgEq
- Assumptions Disclosed
- Yes
Lab
- Laboratory
- ALS
Review
- Needs Review
- No
- Historical
- No
Reasoning: The indicated silver resource is large and supported by a compliant estimate with clear cut-off and QA/QC disclosure.
Positive factors
- Updated indicated resource is 9.5 Mt at 289 g/t Ag
- Contained silver is 88,192 koz
- NI 43-101 and QP sign-off disclosed
Negative factors
- This is a resource estimate, not a reserve
- No measured category reported
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 3.2 years before this release
indicatedPanuco · goldTonnes: 9500000Grade: 2.41Grade Unit: g/tContained Metal: 736Contained Unit: kozView all detailsHide details
Identity
- Project
- Panuco
- Commodity
- gold
- Region
- mexico
- Reported Region
- Sinaloa, Mexico
- Ticker
- VZLA
Resource scope
- Estimate type
- resource
- Effective date
- 2023-09-01T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Allan Armitage
- Resource group id
- resource:235d7d987ca1c5d911a8
- Deposit or zone
- Total Indicated
- Mining method
- underground
- Ownership percent
- 100 %
Resource Data
- Category
- indicated
- Tonnes
- 9500000
- Grade
- 2.41
- Grade Unit
- g/t
- Contained Metal
- 736
- Contained Unit
- koz
- Cutoff Grade
- 150
- Cutoff Unit
- g/t AgEq
Prior Estimate
- Resource Date
- 2023-09-01
Metal Equivalent
- Metal Eq. Grade
- 511
- Metal Eq. Unit
- g/t AgEq
- Assumptions Disclosed
- Yes
Lab
- Laboratory
- ALS
Review
- Needs Review
- No
- Historical
- No
Reasoning: The gold component of the indicated resource is materially improved and supported by the same compliant estimate.
Positive factors
- Indicated gold resource is 9.5 Mt at 2.41 g/t Au
- Contained gold is 736 koz
- Updated estimate improved the project resource base
Negative factors
- This is a resource estimate, not an economic study
- No measured category reported
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 3.2 years before this release
indicatedPanuco · leadTonnes: 9500000Grade: 0.27Grade Unit: %Contained Metal: 25.4Contained Unit: ktView all detailsHide details
Identity
- Project
- Panuco
- Commodity
- lead
- Region
- mexico
- Reported Region
- Sinaloa, Mexico
- Ticker
- VZLA
Resource scope
- Estimate type
- resource
- Effective date
- 2023-09-01T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Allan Armitage
- Resource group id
- resource:235d7d987ca1c5d911a8
- Deposit or zone
- Total Indicated
- Mining method
- underground
- Ownership percent
- 100 %
Resource Data
- Category
- indicated
- Tonnes
- 9500000
- Grade
- 0.27
- Grade Unit
- %
- Contained Metal
- 25.4
- Contained Unit
- kt
- Cutoff Grade
- 150
- Cutoff Unit
- g/t AgEq
Prior Estimate
- Resource Date
- 2023-09-01
Metal Equivalent
- Metal Eq. Grade
- 511
- Metal Eq. Unit
- g/t AgEq
- Assumptions Disclosed
- Yes
Lab
- Laboratory
- ALS
Review
- Needs Review
- No
- Historical
- No
Reasoning: Lead is a secondary resource component that contributes to the overall polymetallic inventory but is not the main economic driver.
Positive factors
- Lead grade and contained metal are explicitly reported
- Same compliant resource table carries the polymetallic inventory
Negative factors
- Lead is a byproduct metal in this context
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 3.2 years before this release
indicatedPanuco · zincTonnes: 9500000Grade: 0.84Grade Unit: %Contained Metal: 79.9Contained Unit: ktView all detailsHide details
Identity
- Project
- Panuco
- Commodity
- zinc
- Region
- mexico
- Reported Region
- Sinaloa, Mexico
- Ticker
- VZLA
Resource scope
- Estimate type
- resource
- Effective date
- 2023-09-01T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Allan Armitage
- Resource group id
- resource:235d7d987ca1c5d911a8
- Deposit or zone
- Total Indicated
- Mining method
- underground
- Ownership percent
- 100 %
Resource Data
- Category
- indicated
- Tonnes
- 9500000
- Grade
- 0.84
- Grade Unit
- %
- Contained Metal
- 79.9
- Contained Unit
- kt
- Cutoff Grade
- 150
- Cutoff Unit
- g/t AgEq
Prior Estimate
- Resource Date
- 2023-09-01
Metal Equivalent
- Metal Eq. Grade
- 511
- Metal Eq. Unit
- g/t AgEq
- Assumptions Disclosed
- Yes
Lab
- Laboratory
- ALS
Review
- Needs Review
- No
- Historical
- No
Reasoning: Zinc adds meaningful contained metal to the polymetallic inventory, though the headline remains the silver-gold resource.
Positive factors
- Zinc grade and contained metal are explicitly reported
- Polymetallic estimate is fully disclosed
Negative factors
- Zinc is a byproduct metal in this context
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 3.2 years before this release
inferredPanuco · silverTonnes: 12200000Grade: 239Grade Unit: g/tContained Metal: 93653Contained Unit: kozView all detailsHide details
Identity
- Project
- Panuco
- Commodity
- silver
- Region
- mexico
- Reported Region
- Sinaloa, Mexico
- Ticker
- VZLA
Resource scope
- Estimate type
- resource
- Effective date
- 2023-09-01T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Allan Armitage
- Resource group id
- resource:28a28e194daac1c2989d
- Deposit or zone
- Total Inferred
- Mining method
- underground
- Ownership percent
- 100 %
Resource Data
- Category
- inferred
- Tonnes
- 12200000
- Grade
- 239
- Grade Unit
- g/t
- Contained Metal
- 93653
- Contained Unit
- koz
- Cutoff Grade
- 150
- Cutoff Unit
- g/t AgEq
Prior Estimate
- Resource Date
- 2023-09-01
Metal Equivalent
- Metal Eq. Grade
- 433
- Metal Eq. Unit
- g/t AgEq
- Assumptions Disclosed
- Yes
Lab
- Laboratory
- ALS
Review
- Needs Review
- No
- Historical
- No
Reasoning: The inferred silver inventory is large and well disclosed, but the category remains lower-confidence than indicated.
Positive factors
- Inferred silver resource increased to 12.2 Mt at 239 g/t Ag
- Contained silver is 93,653 koz
- Polymetallic estimate is explicitly quantified
Negative factors
- Inferred category is lower confidence than indicated
- This remains a resource estimate, not a reserve
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 3.2 years before this release
inferredPanuco · goldTonnes: 12200000Grade: 1.93Grade Unit: g/tContained Metal: 758Contained Unit: kozView all detailsHide details
Identity
- Project
- Panuco
- Commodity
- gold
- Region
- mexico
- Reported Region
- Sinaloa, Mexico
- Ticker
- VZLA
Resource scope
- Estimate type
- resource
- Effective date
- 2023-09-01T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Allan Armitage
- Resource group id
- resource:28a28e194daac1c2989d
- Deposit or zone
- Total Inferred
- Mining method
- underground
- Ownership percent
- 100 %
Resource Data
- Category
- inferred
- Tonnes
- 12200000
- Grade
- 1.93
- Grade Unit
- g/t
- Contained Metal
- 758
- Contained Unit
- koz
- Cutoff Grade
- 150
- Cutoff Unit
- g/t AgEq
Prior Estimate
- Resource Date
- 2023-09-01
Metal Equivalent
- Metal Eq. Grade
- 433
- Metal Eq. Unit
- g/t AgEq
- Assumptions Disclosed
- Yes
Lab
- Laboratory
- ALS
Review
- Needs Review
- No
- Historical
- No
Reasoning: The inferred gold inventory is substantial, but confidence remains lower than for the indicated category.
Positive factors
- Inferred gold resource is 12.2 Mt at 1.93 g/t Au
- Contained gold is 758 koz
- Growth in inferred ounces was highlighted in the release
Negative factors
- Inferred category is lower confidence than indicated
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 3.2 years before this release
inferredPanuco · leadTonnes: 12200000Grade: 0.29Grade Unit: %Contained Metal: 35.4Contained Unit: ktView all detailsHide details
Identity
- Project
- Panuco
- Commodity
- lead
- Region
- mexico
- Reported Region
- Sinaloa, Mexico
- Ticker
- VZLA
Resource scope
- Estimate type
- resource
- Effective date
- 2023-09-01T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Allan Armitage
- Resource group id
- resource:28a28e194daac1c2989d
- Deposit or zone
- Total Inferred
- Mining method
- underground
- Ownership percent
- 100 %
Resource Data
- Category
- inferred
- Tonnes
- 12200000
- Grade
- 0.29
- Grade Unit
- %
- Contained Metal
- 35.4
- Contained Unit
- kt
- Cutoff Grade
- 150
- Cutoff Unit
- g/t AgEq
Prior Estimate
- Resource Date
- 2023-09-01
Metal Equivalent
- Metal Eq. Grade
- 433
- Metal Eq. Unit
- g/t AgEq
- Assumptions Disclosed
- Yes
Lab
- Laboratory
- ALS
Review
- Needs Review
- No
- Historical
- No
Reasoning: Lead is a secondary constituent of the inferred resource and therefore has limited standalone importance.
Positive factors
- Lead grade and contained metal are explicitly reported
Negative factors
- Lead is a byproduct metal
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 3.2 years before this release
inferredPanuco · zincTonnes: 12200000Grade: 1.03Grade Unit: %Contained Metal: 125.3Contained Unit: ktView all detailsHide details
Identity
- Project
- Panuco
- Commodity
- zinc
- Region
- mexico
- Reported Region
- Sinaloa, Mexico
- Ticker
- VZLA
Resource scope
- Estimate type
- resource
- Effective date
- 2023-09-01T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Allan Armitage
- Resource group id
- resource:28a28e194daac1c2989d
- Deposit or zone
- Total Inferred
- Mining method
- underground
- Ownership percent
- 100 %
Resource Data
- Category
- inferred
- Tonnes
- 12200000
- Grade
- 1.03
- Grade Unit
- %
- Contained Metal
- 125.3
- Contained Unit
- kt
- Cutoff Grade
- 150
- Cutoff Unit
- g/t AgEq
Prior Estimate
- Resource Date
- 2023-09-01
Metal Equivalent
- Metal Eq. Grade
- 433
- Metal Eq. Unit
- g/t AgEq
- Assumptions Disclosed
- Yes
Lab
- Laboratory
- ALS
Review
- Needs Review
- No
- Historical
- No
Reasoning: Zinc contributes materially to the polymetallic inferred resource, but it is not the primary commodity.
Positive factors
- Zinc grade and contained metal are explicitly reported
Negative factors
- Zinc is a byproduct metal
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is stated
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: qp_signed is true
NI 43 101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 3.2 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.