Patagonia Gold Corrects Cost Metrics and Economic Results for the Calcatreu PEA
Original announcement by jmn on
- Company
- Patagonia Gold Corp.
- Ticker
- PGDC
- Exchange
- TSXV
- Region
- Río Negro Province, Argentina
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Other, Resource update
- Extracted
- 2026-10-06 13:35:14 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Patagonia Gold Corp. has corrected previously reported economic metrics for its Calcatreu Gold-Silver Project Preliminary Economic Assessment (PEA). The revisions, which include excluding estimated income tax from Cash Cost and AISC and correcting a regional development tax calculation, have resulted in a higher after-tax NPV of US$370 million, an increased after-tax IRR of 315%, and a shorter payback period of 0.5 years. The company also clarified that the silver recovery assumption used in the economic model was 45%, not 30% as initially reported.
Reasoning: Patagonia Gold Corp. corrected errors in its Calcatreu PEA, leading to significantly improved after-tax NPV, IRR, and cost metrics, making the project more economically attractive. The silver recovery assumption was also clarified.
Positive factors
- improved_npv
- improved_irr
- reduced_costs
- shorter_payback
- clarified_recovery_assumption
Negative factors
- initial_reporting_error
Facts used in scoring: 12
Classification and evidence
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The technical report is being prepared in accordance with National Instrument 43-101.
Evidence · text
“The technical report being prepared in accordance with National Instrument 43-101 (“NI 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: Donald J. Birak and Carlos Guzmán, both Qualified Persons as defined by NI 43-101, have reviewed and approved the scientific and technical information.
Evidence · text
“Donald J. Birak, an independent consulting geologist, Registered Member of SME and Fellow of AusIMM and Carlos Guzmán, Registered Member of the Chilean Mining Commission and Fellow of AusIMM, each a Qualified Person as defined by NI 43-101, have reviewed and approved the scientific and technical information in this news release.”
PEA Updateneutral · Story-specific tag
No canonical definition is currently available.
Why it applies: The document announces corrections to the Preliminary Economic Assessment (PEA) for the Calcatreu project.
Evidence · text
“Patagonia Gold Corrects Cost Metrics and Economic Results for the Calcatreu PEA”
NPV Increasepositive · Story-specific tag
No canonical definition is currently available.
Why it applies: The revised after-tax NPV increased from $334 million to $370 million.
Evidence · table
“$370”
Context: Revised
IRR Increasepositive · Story-specific tag
No canonical definition is currently available.
Why it applies: The revised after-tax IRR increased from 282% to 315%.
Evidence · table
“315%”
Context: 315%
Payback Period Reductionpositive · Story-specific tag
No canonical definition is currently available.
Why it applies: The revised after-tax payback period shortened from 0.6 years to 0.5 years.
Evidence · table
“0.5”
Context: 0.5
Cost Reductionpositive · Story-specific tag
No canonical definition is currently available.
Why it applies: The revised Cash Cost decreased from $2,139/oz Au to $1,332/oz Au and AISC decreased from $2,246/oz Au to $1,439/oz Au.
Evidence · table
“$1,332”
Context: $1,332
Reporting Error Correctedneutral · Story-specific tag
No canonical definition is currently available.
Why it applies: The news release explicitly states corrections to previously reported figures due to inadvertent errors in tax calculation and silver recovery assumption disclosure.
Evidence · text
“Patagonia Gold Corrects Cost Metrics and Economic Results for the Calcatreu PEA”
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The updated Mineral Resource Estimate includes 6.44 million tonnes of inferred mineral resources.
Evidence · text
“6.44 million tonnes of inferred mineral resources”
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: The updated Mineral Resource Estimate includes 1.50 million tonnes of measured mineral resources.
Evidence · text
“1.50 million tonnes of measured mineral resources”
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: The updated Mineral Resource Estimate includes 5.28 million tonnes of indicated mineral resources.
Evidence · text
“5.28 million tonnes of indicated mineral resources”
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The PEA incorporates an updated Mineral Resource Estimate.
Evidence · text
“The PEA incorporates an updated Mineral Resource Estimate (“MRE”)”
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: The document does not disclose the cut-off grade used for the updated Mineral Resource Estimate.
Evidence · text
“The PEA incorporates an updated Mineral Resource Estimate (“MRE”), which contains approximately: 1.50 million tonnes of measured mineral resources grading 3.03 g/t of gold and 23.1 g/t of silver; 5.28 million tonnes of indicated mineral resources grading 2.39 g/t of gold and 23.1 g/t of silver; and 6.44 million tonnes of inferred mineral resources grading 1.54 g/t Au and 15.5 g/t Ag.”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Resource Estimates (6)
measuredCalcatreu Gold-Silver Project · goldTonnes: 1500000Grade: 3.03Grade Unit: g/tView all detailsHide details
Identity
- Project
- Calcatreu Gold-Silver Project
- Commodity
- gold
- Region
- argentina
- Reported Region
- Río Negro Province, Argentina
- Ticker
- PGDC
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Donald J. Birak, Carlos Guzmán
- Resource group id
- resource:2ed84c9898a95d697716
Resource Data
- Category
- measured
- Tonnes
- 1500000
- Grade
- 3.03
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: Measured gold resource provides high confidence for a portion of the project, but the cut-off grade for the estimate is not disclosed.
Positive factors
- measured_resource
Negative factors
- cut_off_undisclosed
Evidence · text
“1.50 million tonnes of measured mineral resources grading 3.03 g/t of gold”
Tags used in scoring
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: category is "measured"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was 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
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
measuredCalcatreu Gold-Silver Project · silverTonnes: 1500000Grade: 23.1Grade Unit: g/tView all detailsHide details
Identity
- Project
- Calcatreu Gold-Silver Project
- Commodity
- silver
- Region
- argentina
- Reported Region
- Río Negro Province, Argentina
- Ticker
- PGDC
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Donald J. Birak, Carlos Guzmán
- Resource group id
- resource:2ed84c9898a95d697716
Resource Data
- Category
- measured
- Tonnes
- 1500000
- Grade
- 23.1
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: Measured silver resource provides high confidence for a portion of the project, but the cut-off grade for the estimate is not disclosed.
Positive factors
- measured_resource
Negative factors
- cut_off_undisclosed
Evidence · text
“23.1 g/t of silver”
Context: 1.50 million tonnes of measured mineral resources grading 3.03 g/t of gold and 23.1 g/t of silver
Tags used in scoring
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: category is "measured"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was 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
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
indicatedCalcatreu Gold-Silver Project · goldTonnes: 5280000Grade: 2.39Grade Unit: g/tView all detailsHide details
Identity
- Project
- Calcatreu Gold-Silver Project
- Commodity
- gold
- Region
- argentina
- Reported Region
- Río Negro Province, Argentina
- Ticker
- PGDC
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Donald J. Birak, Carlos Guzmán
- Resource group id
- resource:4bc361809e33f3db89d6
Resource Data
- Category
- indicated
- Tonnes
- 5280000
- Grade
- 2.39
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: Indicated gold resource provides reasonable confidence, but the cut-off grade for the estimate is not disclosed.
Positive factors
- indicated_resource
Negative factors
- cut_off_undisclosed
Evidence · text
“5.28 million tonnes of indicated mineral resources grading 2.39 g/t of gold”
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
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
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
indicatedCalcatreu Gold-Silver Project · silverTonnes: 5280000Grade: 23.1Grade Unit: g/tView all detailsHide details
Identity
- Project
- Calcatreu Gold-Silver Project
- Commodity
- silver
- Region
- argentina
- Reported Region
- Río Negro Province, Argentina
- Ticker
- PGDC
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Donald J. Birak, Carlos Guzmán
- Resource group id
- resource:4bc361809e33f3db89d6
Resource Data
- Category
- indicated
- Tonnes
- 5280000
- Grade
- 23.1
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: Indicated silver resource provides reasonable confidence, but the cut-off grade for the estimate is not disclosed.
Positive factors
- indicated_resource
Negative factors
- cut_off_undisclosed
Evidence · text
“23.1 g/t of silver”
Context: 5.28 million tonnes of indicated mineral resources grading 2.39 g/t of gold and 23.1 g/t of 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
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
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
inferredCalcatreu Gold-Silver Project · goldTonnes: 6440000Grade: 1.54Grade Unit: g/tView all detailsHide details
Identity
- Project
- Calcatreu Gold-Silver Project
- Commodity
- gold
- Region
- argentina
- Reported Region
- Río Negro Province, Argentina
- Ticker
- PGDC
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Donald J. Birak, Carlos Guzmán
- Resource group id
- resource:82f7a03b5f5813235fce
Resource Data
- Category
- inferred
- Tonnes
- 6440000
- Grade
- 1.54
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: Inferred gold resource is speculative and cannot support economic studies, and the cut-off grade for the estimate is not disclosed.
Negative factors
- inferred_resource
- cut_off_undisclosed
Evidence · text
“6.44 million tonnes of inferred mineral resources grading 1.54 g/t Au”
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
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
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
inferredCalcatreu Gold-Silver Project · silverTonnes: 6440000Grade: 15.5Grade Unit: g/tView all detailsHide details
Identity
- Project
- Calcatreu Gold-Silver Project
- Commodity
- silver
- Region
- argentina
- Reported Region
- Río Negro Province, Argentina
- Ticker
- PGDC
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Donald J. Birak, Carlos Guzmán
- Resource group id
- resource:82f7a03b5f5813235fce
Resource Data
- Category
- inferred
- Tonnes
- 6440000
- Grade
- 15.5
- Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-06T00:00:00.000Z
Reasoning: Inferred silver resource is speculative and cannot support economic studies, and the cut-off grade for the estimate is not disclosed.
Negative factors
- inferred_resource
- cut_off_undisclosed
Evidence · text
“15.5 g/t Ag”
Context: 6.44 million tonnes of inferred mineral resources grading 1.54 g/t Au and 15.5 g/t Ag
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
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
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
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.