# Altamira Gold Expands Mineralized Porphyry System at Maria Bonita Gold Deposit, Cajueiro District, Brazil Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--cd5cdf92-cdc7-4faa-9269-f15035377a6f 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: 2026-09-13 10:36:22 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Altamira Gold reported successful step-out drilling at the Maria Bonita deposit, with holes MBA038 and MBA039 intersecting wide zones of gold mineralization outside the current resource boundary. The results suggest the porphyry-hosted mineralized system extends into the surrounding volcanic tuffs. Conversely, scout drilling at the Mombaque prospect returned only narrow, low-grade intercepts. Reasoning: Drilling at Maria Bonita successfully extended the known mineralized footprint to the north-west and into the wall rock, though the Mombaque target was not scalable. - Positive factor: extension of mineralized system beyond existing resource boundaries - Positive factor: mineralization identified in wall rock tuffs outside the porphyry - Positive factor: wide intercepts \(117m and 74m\) confirm system scale - Negative factor: Mombaque prospect results were disappointing/low-grade Facts used in scoring: 4 ## Classification and evidence **Step-Out Extension** Polarity: positive Definition: Mineralization extended beyond the previously known limit. Why it applies: Intercepts MBA038 and MBA039 are outside the existing Maria Bonita gold resource. Evidence · text > Two drill holes completed to the north-west and outside of the Maria Bonita gold resource **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: Release details laboratory \(SGS Geosol\), methods \(fire assay, ICP\), and QA/QC protocols \(blanks, standards, duplicates\). Evidence · text > Quality control of drill hole assays follows normal industry procedures of inserting control samples randomly ## 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-extractions.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--cd5cdf92-cdc7-4faa-9269-f15035377a6f#fact-drill-facts-0) Maria Bonita · gold #### Identity - Hole ID: MBA039 - Project: Maria Bonita - Commodity: gold - Region: brazil - Reported Region: brazil - Ticker: ALTA #### Geometry - Grade: 0.4 - Grade Unit: g/t - Intercept: 117 m - From: 0 m - To: 117 m - Intercept Depth: 0 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: MBA039:0-117 - Mining Method: open\_pit #### Location - Location: north-west of Maria Bonita - Loc. Source: document #### QA/QC - Laboratory: SGS Geosol - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-23T00:00:00.000Z Reasoning: Wide intercept of 117m at 0.4 g/t Au confirms extension of the system. - Positive factor: wide intercept \(117m\) - Positive factor: extends resource boundary Evidence · text > Drill hole MBA039 intersected 117m @ 0.4g/t gold from surface #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 ### MBA038 [Link to this fact](https://atlas-extractions.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--cd5cdf92-cdc7-4faa-9269-f15035377a6f#fact-drill-facts-1) Maria Bonita · gold #### Identity - Hole ID: MBA038 - Project: Maria Bonita - Commodity: gold - Region: brazil - Reported Region: brazil - Ticker: ALTA #### Geometry - Grade: 0.3 - Grade Unit: g/t - Intercept: 74 m - From: 74 m - To: 148 m - Intercept Depth: 74 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: MBA038:74-148 - Mining Method: open\_pit #### Location - Location: north-west of Maria Bonita - Loc. Source: document #### QA/QC - Laboratory: SGS Geosol - QA/QC Disclosed: Yes - QP Signed: Yes - QA/QC Methods: standards, blanks, duplicates #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-23T00:00:00.000Z Reasoning: Significant because mineralization is preserved in the wall rock tuffs, increasing tonnage potential. - Positive factor: mineralization in wall rock tuffs - Positive factor: extends system beyond porphyry limits Evidence · text > Drill hole MBA038 returned 74m @ 0.3g/t gold from 74m downhole #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 ### MBQ001 [Link to this fact](https://atlas-extractions.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--cd5cdf92-cdc7-4faa-9269-f15035377a6f#fact-drill-facts-2) Mombaque #### Identity - Hole ID: MBQ001 - Project: Mombaque - Region: brazil - Reported Region: brazil - Ticker: ALTA #### Classification - Program: exploration - Sample Type: drill #### 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: Scout drilling at Mombaque returned only narrow zones of low-grade gold. - Negative factor: low-grade results - Negative factor: reduces likelihood of scalable system Evidence · text > Drill results \(Figures 6 & 7 and Table 2\) show only narrow zones of low-grade gold in tuffs and intrusives. #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 ### MBQ002 [Link to this fact](https://atlas-extractions.minestarters.com/news/altamira-gold-expands-mineralized-porphyry-system-at-maria-bonita-gold-deposit-c--cd5cdf92-cdc7-4faa-9269-f15035377a6f#fact-drill-facts-3) Mombaque #### Identity - Hole ID: MBQ002 - Project: Mombaque - Region: brazil - Reported Region: brazil - Ticker: ALTA #### Classification - Program: exploration - Sample Type: drill #### 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: The magnetic felsic intrusive intersected in MBQ002 does not contain significant gold. - Negative factor: no significant gold Evidence · text > The magnetic felsic intrusive intersected in the lower part of hole MBQ002 ... does not contain significant gold #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **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 ## 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.