Altamira Gold Welcomes Leading Authority on Porphyry Deposits Dr. Richard Sillitoe as Technical Advisor
Original announcement by tmx on
- Company
- Altamira Gold Corp.
- Ticker
- ALTA
- Exchange
- TSX
- Region
- Brazil
- Primary commodity
- Gold
- Secondary commodities
- None reported
- Document categories
- Resource update, Other
- Extracted
- 2026-09-13 11:17:03 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Altamira Gold Corp. has appointed Dr. Richard Sillitoe, a leading authority on porphyry and epithermal systems, as a technical advisor for its Cajueiro Porphyry Gold District in Brazil. The company also noted ongoing diamond drilling at the Maria Bonita and Cajueiro Central deposits and provided a summary of existing NI 43-101 mineral resources.
Reasoning: The appointment of a top-tier technical advisor adds significant credibility to the company's porphyry exploration strategy, though the resource data provided is historical/existing.
Positive factors
- Appointment of world-renowned porphyry expert Dr. Richard Sillitoe
- Ongoing drilling at two deposits
- Existing NI 43-101 compliant resources
Facts used in scoring: 4
Classification and evidence
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: Guillermo Hughes, FAIG and M Aus IMM., is named as the Qualified Person supervising the technical information.
Evidence · text
“Qualified Person Guillermo Hughes, FAIG and M Aus IMM., a consultant to the Company as well as a Qualified Person as defined by National Instrument 43-101, supervised and approved the preparation of the technical information”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The document explicitly references NI 43-101 resources and technical reports.
Evidence · text
“The central area comprises NI 43-101 resources”
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Resource Estimates (4)
indicatedgoldTonnes: 5660000Grade: 1.02Grade Unit: g/tContained Metal: 185000Contained Unit: ozHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- gold
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- ALTA
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- Resource group id
- resource:8104e8f8014a34cef8a5
- Deposit or zone
- Cajueiro Central
Resource Data
- Category
- indicated
- Tonnes
- 5660000
- Grade
- 1.02
- Grade Unit
- g/t
- Contained Metal
- 185000
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2019-10-10
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2019-10-10T00:00:00.000Z
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Existing indicated resource for the central area.
Positive factors
- Indicated category
Negative factors
- Historical data
Evidence · text
“The central area comprises NI 43-101 resources of 5.66Mt @ 1.02 g/t gold for a total of 185,000 oz in the Indicated Resource category”
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
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
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 6.1 years before this release
inferredgoldTonnes: 12660000Grade: 1.26Grade Unit: g/tContained Metal: 515000Contained Unit: ozHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- gold
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- ALTA
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- Resource group id
- resource:d7e8d7ac305effdf21a9
- Deposit or zone
- Cajueiro Central
Resource Data
- Category
- inferred
- Tonnes
- 12660000
- Grade
- 1.26
- Grade Unit
- g/t
- Contained Metal
- 515000
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2019-10-10
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2019-10-10T00:00:00.000Z
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Existing inferred resource for the central area.
Positive factors
- Higher grade than indicated
Negative factors
- Inferred category
- Historical data
Evidence · text
“12.66Mt @ 1.26 g/t gold for a total of 515,000oz in the Inferred Resource category”
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
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
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 6.1 years before this release
indicatedgoldTonnes: 24190000Grade: 0.46Grade Unit: g/tContained Metal: 357800Contained Unit: ozHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- gold
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- ALTA
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- Resource group id
- resource:d90bc9874e91d986cbc9
- Deposit or zone
- Maria Bonita
Resource Data
- Category
- indicated
- Tonnes
- 24190000
- Grade
- 0.46
- Grade Unit
- g/t
- Contained Metal
- 357800
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2025-06-12
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-06-12T00:00:00.000Z
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Existing indicated resource for Maria Bonita.
Positive factors
- Indicated category
- Open pit
Evidence · text
“Maria Bonita gold deposit comprises additional open pit Indicated Resources of 24.19Mt @ 0.46g/t for a total of 357,800oz”
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
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
inferredgoldTonnes: 25640000Grade: 0.44Grade Unit: g/tContained Metal: 362400Contained Unit: ozHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Commodity
- gold
- Region
- brazil
- Reported Region
- Brazil
- Ticker
- ALTA
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- Resource group id
- resource:3b91545a8fd5668f6a66
- Deposit or zone
- Maria Bonita
Resource Data
- Category
- inferred
- Tonnes
- 25640000
- Grade
- 0.44
- Grade Unit
- g/t
- Contained Metal
- 362400
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2025-06-12
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Historical
- Yes
- Historical Source Date
- 2025-06-12T00:00:00.000Z
Dates
- Event date
- 2025-12-03T00:00:00.000Z
Reasoning: Existing inferred resource for Maria Bonita.
Negative factors
- Inferred category
Evidence · text
“and Inferred Resources of 25.64Mt @ 0.44g/t for a total of 362,400oz”
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
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
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.