Northwire Canada EditionThursday, October 15, 2026
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Drill Results Routine +

Altamira Gold Discovers New Mineralized Porphyry Body at Maria Bonita West, Cajueiro Gold District, Brazil

Altamira’s wide low-grade porphyry step-out confirms the western body near cut-off grades.

By The Northwire Desk — AI Analysis Aug 25, 2026 · 07:30 ALTA · 0.2 Altamira Gold Corp.
Executive Summary

Altamira Gold Corp. (ALTA) reported results from four drill holes, MBA-040 to MBA-043, which tested the western extension of the Maria Bonita porphyry gold system in Brazil. The company interprets the results from MBA-042 and MBA-043 as confirming a new western early porphyry body that remains open to the west and at depth.

Key intercepts from the program include:

  • MBA-042 returned three separate intervals totalling 282m downhole: 36.2m @ 0.4 g/t Au from surface, 45.4m @ 0.3 g/t Au from 61.9m, and 200.4m @ 0.3 g/t Au from 113.2m.
  • MBA-043 returned 231.5m @ 0.4 g/t Au from 93m and ended in mineralization.
  • MBA-040 returned 40.0m @ 0.1 g/t Au from 184m.
  • MBA-041 returned 10.6m @ 0.2 g/t Au from 10.6m.

The release also disclosed an 8,050,000 stock option grant at C$0.20 per share.

Material Impact

Altamira Gold Corp. (ALTA) released drilling results that confirm the existence of a separate western porphyry body at Maria Bonita, located outside the current resource boundary. The immediate western anchor holes were MBA-036, which returned 70.6m @ 0.5 g/t Au, and MBA-037, which returned 122m @ 0.5 g/t Au.

While the new holes deliver better gram-metres, the grade of the new body is approximately 0.3-0.4 g/t Au. This is below the current Maria Bonita resource grade of 0.44-0.46 g/t Au, and true widths remain unknown. The stock closed at C$0.20 before the release, near the bottom half of its 52-week range and well below its C$0.38 high.

ALTA · Price
Company Overview

Altamira Gold Corp. (ALTA) is a pre-revenue Canadian junior explorer listed on the TSXV. The company focuses on gold exploration in the Alta Floresta-Juruena Gold Belt of Mato Grosso, Brazil, controlling approximately 90,000 hectares across four project areas.

The Cajueiro district contains two independent NI 43-101 resources. At Maria Bonita, the indicated resource totals 24.19Mt @ 0.46 g/t Au for 357,800 oz, while the inferred resource is 25.64Mt @ 0.44 g/t Au for 362,400 oz. At Cajueiro Central, the indicated resource is 5.66Mt @ 1.02 g/t Au for 185,000 oz, and the inferred resource is 12.66Mt @ 1.26 g/t Au for 515,000 oz.

The presentation describes free-milling gold with reported recoveries of about 88-96% depending on area and method. Management includes President and CEO Michael Bennett and technical advisor Dr. Richard Sillitoe.

Read the original news release →

More from Altamira Gold Corp.

Oct 08, 2026 · 07:30

Altamira’s 134m at 0.5 g/t confirms pit grade while its 114m at 0.7 g/t trench offers the real upside.

Drill Results Sep 21, 2026 · 08:30

Altamira’s Maria Bonita resource increased 82% to 1.31 moz, with 69% classified as Inferred.

Resource Estimate Aug 19, 2026 · 07:30

Altamira acquires a 58km² land package in Brazil to unlock district-scale exploration potential.

Drill Results Jul 23, 2026 · 08:30

Altamira’s low-grade porphyry gold expansion at Maria Bonita adds tonnage but lacks the grade punch to re-rate the project.

Drill Results May 20, 2026 · 07:30

Altamira Gold Extends Maria Bonita Footprint, But Dilution Fears Weigh on Shares

Drill Results May 12, 2026 · 07:30

Porphyry Footprint Expansion Validates District Model but Dilution Risks Loom

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