Altamira Gold Corp. reports exploration and corporate developments tied to its gold projects in Brazil, with recurring updates centered on the Cajueiro district in Mato Grosso. Company news has focused on diamond drilling, assay results, mineral-resource extension work, and porphyry gold targets including Maria Bonita, Cajueiro Central, Morro Verde, Tavares Norte, Mombaque and Guillermo.
Updates also cover capital actions such as warrant exercises used to support exploration activity, along with board and technical-advisory appointments connected to the company's mineral exploration program. The Cajueiro district is described in company releases as Altamira's most advanced regional project, with defined resources and additional exploration targets around a broader gold-mineralized corridor.
Altamira Gold (EQTRF) reported a 134m gold-bearing drill interval at Maria Bonita in Brazil, with mineralization remaining open at depth. Hole MBA045 returned 134m at 0.5 g/t gold from 215m to its bottom at 349m, plus 87m at 0.4 g/t from surface and 52m at 0.3 g/t from 155m. Trench TCMBA05 returned 114m at 0.7 g/t gold, including 36m at 1.3 g/t.
These results lie within the updated optimized pit footprint but arrived after the resource estimate's cutoff. MBA044 returned predominantly below-cutoff gold values, while trenches TCMBA03 and TCMBA04 generally returned low values. Western-extension drilling is underway; additional trenching and shallow drilling are planned. Results for MBA046 and TCMBA06 remain pending.
Altamira Gold (EQTRF) has released an independently prepared updated Mineral Resource Estimate for the Maria Bonita porphyry gold deposit at its Cajueiro Project in Brazil, effective September 16, 2026.
The open-pit resource now totals 25Mt @ 0.50 g/t Au (403,877 oz) Indicated and 70Mt @ 0.41 g/t Au (908,477 oz) Inferred, at a 0.24 g/t cut-off. This reflects a 90% increase in total tonnage and an 82% increase in contained gold versus the 2025 maiden estimate, including a 12% rise in Indicated ounces and a 150% rise in Inferred ounces. A higher-grade component at a 0.5 g/t cut-off has also expanded to 9.30Mt @ 0.75 g/t (225,630 oz) Indicated and 11.11Mt @ 0.80 g/t (286,859 oz) Inferred, with contained gold up 56% overall at this higher cut-off. The conceptual pit shell implies a waste-to-mineralized material ratio of about 0.4:1, and mineralization remains open to the west, south and at depth with drilling ongoing.
Altamira Gold (OTCQB: EQTRF) reported results from four additional drill holes (MBA-040 to MBA-043) at the Maria Bonita gold porphyry system in the Cajueiro district, Brazil. Holes MBA-042 and MBA-043 cut long, coherent gold intervals in a newly defined western intrusive body.
MBA-042 returned a total of 282m of mineralization, including 36.2m @ 0.4 g/t Au from surface, 45.4m @ 0.3 g/t from 61.9m and 200.4m @ 0.3 g/t from 113.2m. MBA-043 intersected 231.5m @ 0.4 g/t from 93m depth, with both holes ending in mineralization, leaving Maria Bonita West open to the west and at depth.
The Cajueiro project hosts open-pit resources at Cajueiro Central of 5.66Mt @ 1.02 g/t Au (185koz) Indicated and 12.66Mt @ 1.26 g/t Au (515koz) Inferred, and at Maria Bonita of 24.19Mt @ 0.46 g/t (357.8koz) Indicated and 25.64Mt @ 0.44 g/t (362.4koz) Inferred.
Altamira plans further drilling, soil sampling and geophysics to define the western extension. The company also granted 8,050,000 stock options at C$0.20 per share, exercisable for five years and vesting over 12 months.
Altamira Gold (OTCQB: EQTRF) has secured surface access to the western extension of its Cajueiro exploration licenses in Mato Grosso, Brazil, covering 58km², including the high-priority Novo Sonho target immediately west of the Maria Bonita porphyry gold deposit.
According to the company, only 5km² of this area has been systematically sampled. Cajueiro currently hosts open-pit resources at Cajueiro Central of 5.66Mt @ 1.02g/t Au (185,000 oz Indicated) and 12.66Mt @ 1.26g/t Au (515,000 oz Inferred), and at Maria Bonita of 24.19Mt @ 0.46g/t Au (357,800 oz Indicated) and 25.64Mt @ 0.44g/t Au (362,400 oz Inferred), estimated using gold prices of US$1,500/oz and US$2,780/oz respectively.
The newly accessible corridor shows gold-in-soil anomalies, radiometric signatures and artisanal workings over at least 5km, and Altamira plans soil confirmation, trenching, scout drilling at Novo Sonho and resource extension drilling west of Maria Bonita.
Altamira Gold (OTCQB: EQTRF) reported new drill results from the Maria Bonita gold deposit in the Cajueiro district, Brazil. Hole MBA039 cut 117m @ 0.4 g/t gold from surface in volcanic tuffs, while MBA038 intersected 74m @ 0.3 g/t gold from 74m in porphyry and tuff with hydrothermal quartz veining.
Both intercepts lie outside the current Maria Bonita mineral resource and optimised pit, confirming that mineralization extends to the north, west and at depth, and into volcanic tuff wall rocks. Scout drilling at the nearby Mombaque prospect returned only narrow low-grade zones, reducing the likelihood of a scalable system there.
Altamira Gold (OTCQB: EQTRF) reported new scout drilling results from the Maria Bonita deposit in the Cajueiro district, Brazil. Step-out hole MBA037, 110m north of the current resource, intersected 9m @ 0.7 g/t gold from 39m and 130m @ 0.5 g/t from 97m, including 40m @ 0.8 g/t from 100m.
According to Altamira Gold, these results, together with hole MBA036, indicate the porphyry-hosted gold system remains open to the west and north. The Cajueiro Central open-pit resource totals 185,000 oz Indicated and 515,000 oz Inferred, while Maria Bonita hosts 357,800 oz Indicated and 362,400 oz Inferred.
Altamira Gold (OTCQB: EQTRF) reported new scout drilling results from hole MBA036 west of the Maria Bonita gold resource at the Cajueiro district, Brazil.
The hole cut 19m @ 0.5g/t Au from 239m and 70.6m @ 0.5g/t Au from 277m, indicating a separate early porphyry body and extending the mineralized system westward.
Altamira Gold (TSXV: ALTA; OTCQB: EQTRF) announced on April 7, 2026 the appointment of macro investor Tavi Costa to its board and the resignation of director Ioannis Tsitos after nine years. Costa is founder and CEO of Azuria Capital and a founding shareholder of San Cristóbal Mining, and the company expects his capital‑markets experience to support advancement of the Cajueiro gold district and broader Alta Floresta land package.
The company highlighted the 43‑101 resource at Cajueiro as the anchor for current value and cited exploration upside; management said Costa will advise on capital decisions and unlocking resource potential.
Altamira Gold (OTCQB: EQTRF) reported initial drill results from the Cajueiro district on March 18, 2026, highlighting a high-grade scout intercept at Guillermo and deeper continuity at Maria Bonita.
Key highlights include GLO-01: 7m @ 4.2 g/t Au (including 0.9m @ 18.1 g/t Au) and MBA-034: 75m @ 0.3 g/t Au plus 33.5m @ 0.4 g/t Au, extending mineralization >100m below prior drilling. The project contains existing open-pit resources at Cajueiro Central and Maria Bonita totaling several hundred thousand ounces.
Altamira Gold (OTCQB: EQTRF) reported drill results from Cajueiro Central and started drilling at the untested Mombaque and Guillermo porphyry targets on January 28, 2026. Early results include multiple intercepts such as 7.5m @ 1.02 g/t Au, 5m @ 1.46 g/t Au, and a high-grade 0.7m @ 19.0 g/t Au near surface.
Cajueiro Central hosts an open-pit resource of 185,000 oz Indicated and 515,000 oz Inferred; Maria Bonita holds ~720,200 oz combined Indicated and Inferred. A new exploration camp at Maria Bonita is operational to support drilling.