Marifil Reports a Positive Opening NI 43-101 Resource at San Roque
Original announcement by tmx on
- Company
- Marifil Mines Limited
- Ticker
- MFM
- Exchange
- TSX
- Region
- Rio Negro Province, Argentina
- Primary commodity
- Gold
- Secondary commodities
- Zinc, Silver, Indium, Lead
- Document categories
- Resource update
- Extracted
- 2026-09-12 07:58:16 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Marifil Mines Limited has announced its first NI 43-101 mineral resource estimate for the San Roque property in Argentina. The Inferred resource totals approximately 32.9 Mt at 1.42 g/t AuEq, containing significant gold, zinc, silver, indium, and lead.
Reasoning: The announcement reports a large maiden polymetallic Inferred resource, but the lack of Measured/Indicated categories and metallurgical testing limits geological and economic confidence.
Positive factors
- Maiden resource establishment
- Large polymetallic scale
- Significant indium and silver credits
- NI 43-101 compliant
Negative factors
- 100% Inferred category
- No metallurgical recovery test results reported
- Conceptual pit shells used
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 10
Extracted facts
Stored fact records: 10. Some facts used in scoring do not have a stored record.
Resource Estimates (10)
inferredSan Roque · goldTonnes: 7121500Grade: 0.72Grade Unit: g/tView all detailsHide details
Identity
- Project
- San Roque
- Commodity
- gold
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:3188c507170b33678e0b
- Deposit or zone
- Oxide
- Mining method
- combined
- Material type
- oxide
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 0.72
- Grade Unit
- g/t
- Cutoff Grade
- 0.5
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Metal Eq. Grade
- 1.29
- Metal Eq. Unit
- g/t AuEq
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Oxide gold grade is moderate for an epithermal system.
Positive factors
- Part of maiden resource
Negative factors
- Inferred only
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · silverTonnes: 7121500Grade: 8.78Grade Unit: g/tView all detailsHide details
Identity
- Project
- San Roque
- Commodity
- silver
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:3188c507170b33678e0b
- Deposit or zone
- Oxide
- Mining method
- combined
- Material type
- oxide
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 8.78
- Grade Unit
- g/t
- Cutoff Grade
- 0.5
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Silver grade component of the oxide resource.
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · leadTonnes: 7121500Grade: 0.28Grade Unit: %View all detailsHide details
Identity
- Project
- San Roque
- Commodity
- lead
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:3188c507170b33678e0b
- Deposit or zone
- Oxide
- Mining method
- combined
- Material type
- oxide
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 0.28
- Grade Unit
- %
- Cutoff Grade
- 0.5
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Lead grade component of the oxide resource.
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · zincTonnes: 7121500Grade: 0.37Grade Unit: %View all detailsHide details
Identity
- Project
- San Roque
- Commodity
- zinc
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:3188c507170b33678e0b
- Deposit or zone
- Oxide
- Mining method
- combined
- Material type
- oxide
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 0.37
- Grade Unit
- %
- Cutoff Grade
- 0.5
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Zinc grade component of the oxide resource.
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · indiumTonnes: 7121500Grade: 7.7Grade Unit: g/tView all detailsHide details
Identity
- Project
- San Roque
- Commodity
- indium
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:3188c507170b33678e0b
- Deposit or zone
- Oxide
- Mining method
- combined
- Material type
- oxide
Resource Data
- Category
- inferred
- Tonnes
- 7121500
- Grade
- 7.7
- Grade Unit
- g/t
- Cutoff Grade
- 0.5
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Indium is a significant byproduct.
Positive factors
- High indium grade
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · goldTonnes: 25769900Grade: 0.39Grade Unit: g/tView all detailsHide details
Identity
- Project
- San Roque
- Commodity
- gold
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:67d713eb3babb4b9794a
- Deposit or zone
- Sulphide
- Mining method
- combined
- Material type
- sulphide
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 0.39
- Grade Unit
- g/t
- Cutoff Grade
- 0.6
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Metal Eq. Grade
- 1.45
- Metal Eq. Unit
- g/t AuEq
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Sulphide gold grade component.
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · silverTonnes: 25769900Grade: 12.99Grade Unit: g/tView all detailsHide details
Identity
- Project
- San Roque
- Commodity
- silver
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:67d713eb3babb4b9794a
- Deposit or zone
- Sulphide
- Mining method
- combined
- Material type
- sulphide
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 12.99
- Grade Unit
- g/t
- Cutoff Grade
- 0.6
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Silver grade component of the sulphide resource.
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · leadTonnes: 25769900Grade: 0.41Grade Unit: %View all detailsHide details
Identity
- Project
- San Roque
- Commodity
- lead
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:67d713eb3babb4b9794a
- Deposit or zone
- Sulphide
- Mining method
- combined
- Material type
- sulphide
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 0.41
- Grade Unit
- %
- Cutoff Grade
- 0.6
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Lead grade component of the sulphide resource.
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · zincTonnes: 25769900Grade: 0.89Grade Unit: %View all detailsHide details
Identity
- Project
- San Roque
- Commodity
- zinc
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:67d713eb3babb4b9794a
- Deposit or zone
- Sulphide
- Mining method
- combined
- Material type
- sulphide
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 0.89
- Grade Unit
- %
- Cutoff Grade
- 0.6
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Zinc grade component of the sulphide resource.
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
inferredSan Roque · indiumTonnes: 25769900Grade: 13.06Grade Unit: g/tView all detailsHide details
Identity
- Project
- San Roque
- Commodity
- indium
- Region
- argentina
- Reported Region
- Rio Negro Province, Argentina
- Ticker
- MFM
Resource scope
- Estimate type
- resource
- Effective date
- 2019-07-22T00:00:00.000Z
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Cameron Norton
- Resource group id
- resource:67d713eb3babb4b9794a
- Deposit or zone
- Sulphide
- Mining method
- combined
- Material type
- sulphide
Resource Data
- Category
- inferred
- Tonnes
- 25769900
- Grade
- 13.06
- Grade Unit
- g/t
- Cutoff Grade
- 0.6
- Cutoff Unit
- g/t AuEq
Prior Estimate
- Resource Date
- 2019-07-22
Metal Equivalent
- Assumptions Disclosed
- Yes
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2019-07-22T00:00:00.000Z
Reasoning: Indium is a significant byproduct.
Positive factors
- High indium grade
Evidence · text
No evidence quote provided.
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
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
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.