# Altamira Gold Expands Mineralized Porphyry System at Maria Bonita Gold Deposit, Cajueiro District, Brazil Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--86640480-5f44-44b0-91c3-5c8d85ac7c30 Original source: https://money.tmx.com/en/quote/ALTA/news/7672684043915935/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c Publisher: tmx Original announcement: 2026-07-23T12:29:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Altamira Gold Corp. - Ticker: ALTA - Exchange: TSX - Region: Mato Grosso, Brazil - Primary commodity: Gold - Secondary commodities: None reported - Document categories: Drill results, Other - Extracted: 2026-08-20 22:28:15 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Altamira Gold has reported successful exploration drilling at the Maria Bonita deposit, with intercepts extending the mineralized porphyry system beyond current resource boundaries. While Maria Bonita shows high potential for expansion, recent scout drilling at the Mombaque prospect returned only narrow, low-grade zones. Reasoning: Drilling at Maria Bonita confirms the porphyry system extends west and into the wall rock, providing significant expansion potential, although Mombaque results were weak. - Positive factor: extension of mineralized system beyond existing resource boundaries - Positive factor: mineralization found in wall rock tuffs increasing tonnage potential - Positive factor: wide intercepts reported - Negative factor: scout drilling at Mombaque prospect was disappointing Facts used in scoring: 4 ## Classification and evidence No classification tags are available. ## Extracted facts Stored fact records: 4. Some facts used in scoring do not have a stored record. ## Drill Results (4) ### MBA039 [Link to this fact](https://atlas-staging.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--86640480-5f44-44b0-91c3-5c8d85ac7c30#fact-drill-facts-0) Maria Bonita · gold #### Identity - Hole ID: MBA039 - Project: Maria Bonita - Commodity: gold - Region: brazil - Reported Region: Mato Grosso, Brazil - Ticker: ALTA #### Geometry - Grade: 0.4 - Grade Unit: g/t - Intercept: 117 m - From: 0 m - To: 117 m #### Classification - Sample Type: drill - Group ID: MBA039:0-117 - Mining Method: open\_pit #### QA/QC - Laboratory: SGS Geosol - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: duplicates, blanks, standards #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-23T00:00:00.000Z Reasoning: Wide 117m intercept extending the system from surface. - Positive factor: wide intercept Evidence · text > Drill hole MBA039 intersected 117m @ 0.4g/t gold from surface ### MBA038 [Link to this fact](https://atlas-staging.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--86640480-5f44-44b0-91c3-5c8d85ac7c30#fact-drill-facts-1) Maria Bonita · gold #### Identity - Hole ID: MBA038 - Project: Maria Bonita - Commodity: gold - Region: brazil - Reported Region: Mato Grosso, Brazil - Ticker: ALTA #### Geometry - Grade: 0.3 - Grade Unit: g/t - Intercept: 74 m - From: 74 m - To: 148 m #### Classification - Sample Type: drill - Group ID: MBA038:74-148 - Mining Method: open\_pit #### QA/QC - Laboratory: SGS Geosol - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: duplicates, blanks, standards #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-23T00:00:00.000Z Reasoning: Significant intercept in wall rock tuffs confirming system extension. - Positive factor: mineralization in wall rock tuffs Evidence · text > Drill hole MBA038 returned 74m @ 0.3g/t gold from 74m downhole ### MBA038 [Link to this fact](https://atlas-staging.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--86640480-5f44-44b0-91c3-5c8d85ac7c30#fact-drill-facts-2) Maria Bonita · gold #### Identity - Hole ID: MBA038 - Project: Maria Bonita - Commodity: gold - Region: brazil - Reported Region: Mato Grosso, Brazil - Ticker: ALTA #### Geometry - Grade: 1.64 - Grade Unit: g/t - Intercept: 1 m #### Classification - Sample Type: drill - Group ID: MBA038:peak-1m - Mining Method: open\_pit #### QA/QC - Laboratory: SGS Geosol - QA/QC Disclosed: Yes - Lab Certified: Yes - QP Signed: Yes - QA/QC Methods: duplicates, blanks, standards #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-23T00:00:00.000Z Reasoning: High grade peak sample within the 74m interval. - Positive factor: high peak value Evidence · text > The 74m interval from 74m downhole is mineralized throughout, with a peak one-metre sample value of 1.64g/t Au. ### MBA036 [Link to this fact](https://atlas-staging.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--86640480-5f44-44b0-91c3-5c8d85ac7c30#fact-drill-facts-3) Maria Bonita · gold #### Identity - Hole ID: MBA036 - Project: Maria Bonita - Commodity: gold - Region: brazil - Reported Region: Mato Grosso, Brazil - Ticker: ALTA #### Geometry - Grade: 0.5 - Grade Unit: g/t - Intercept: 130 m #### Classification - Sample Type: drill - Group ID: MBA036:130m - Mining Method: open\_pit #### QA/QC - QA/QC Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-23T00:00:00.000Z Reasoning: Previously released wide intercept confirming extension. - Positive factor: wide intercept Evidence · text > including 130m @ 0.5 g/t gold in MBA036 ## 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.