# Altamira Gold Welcomes Leading Authority on Porphyry Deposits Dr. Richard Sillitoe as Technical Advisor Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/altamira-gold-welcomes-leading-authority-on-porphyry-deposits-dr-richard-sillito--13ef2e2d-47c8-4419-89f6-7f7f5c5829c1 Original source: https://money.tmx.com/en/quote/ALTA/news/8522437985540748/altamira-gold-welcomes-leading-authority-on-porphyry-deposits-dr-richard-sillito Publisher: tmx Original announcement: 2025-12-03T12:30:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - 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 Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas 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 factor: Appointment of world-renowned porphyry expert Dr. Richard Sillitoe - Positive factor: Ongoing drilling at two deposits - Positive factor: Existing NI 43-101 compliant resources Facts used in scoring: 4 ## Classification and evidence **QP/CP Signed** Polarity: positive Definition: 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 Compliant** Polarity: positive Definition: 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) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/altamira-gold-welcomes-leading-authority-on-porphyry-deposits-dr-richard-sillito--13ef2e2d-47c8-4419-89f6-7f7f5c5829c1#fact-resource-facts-0) gold Historical result Needs review: historical\_restatement #### 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 factor: Indicated category - Negative factor: 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 Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Stale Estimate** Polarity: negative Definition: 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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/altamira-gold-welcomes-leading-authority-on-porphyry-deposits-dr-richard-sillito--13ef2e2d-47c8-4419-89f6-7f7f5c5829c1#fact-resource-facts-1) gold Historical result Needs review: historical\_restatement #### 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 factor: Higher grade than indicated - Negative factor: Inferred category - Negative factor: 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 Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Stale Estimate** Polarity: negative Definition: 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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/altamira-gold-welcomes-leading-authority-on-porphyry-deposits-dr-richard-sillito--13ef2e2d-47c8-4419-89f6-7f7f5c5829c1#fact-resource-facts-2) gold Historical result Needs review: historical\_restatement #### 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 factor: Indicated category - Positive factor: 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 Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/altamira-gold-welcomes-leading-authority-on-porphyry-deposits-dr-richard-sillito--13ef2e2d-47c8-4419-89f6-7f7f5c5829c1#fact-resource-facts-3) gold Historical result Needs review: historical\_restatement #### 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 factor: Inferred category Evidence · text > and Inferred Resources of 25.64Mt @ 0.44g/t for a total of 362,400oz #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **NI 43-101 Compliant** Polarity: positive Definition: 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.