Altamira Gold drills high-grade gold mineralization within the Cajueiro mineral resource, Cajueiro Central Project, Brazil

Altamira Gold Corp. [TSXV: ALTA; FSE: T6UP; OTCQB: EQTRF] reported assay results from recent resource-extension drilling at the Cajueiro Central project, Brazil.

Highlights: The first five diamond drillholes targeting extensions and resource infill at the Cajueiro Central mineral resource have been completed. The drillholes intersected brecciated hydrothermal quartz structures with associated sericitic alteration halos, hosted in rhyolites, consistent with the geological model established by previous programs.

Hole CJO 114, drilled outside the current resource, returned 7.5 metres at 1.02 g/t gold from 1.9 metres depth and 5 metres at 1.46 g/t gold from 112 metres depth, confirming that mineralization extends beyond the existing resource boundaries.

Drillhole CJO 117, drilled within the current resource, returned intercepts of 2.3 metres at 6.1 g/t gold from 34 metres and 2.9 metres at 1.7 g/t from 78m depth. The upper interval included 0.7 metres at 19.0 g/t gold, representing the highest-grade primary intercept reported to date in the Baldo sector of the Cajueiro mineral resource, and indicating potential for higher grade shoots within the established mineralized structures.

Drilling is also in progress at two high-priority and previously untested porphyry targets at Mombaque and Guillermo which are located within the Maria Bonita – Morro Verde trend.

CEO Mike Bennett commented; “Drilling continues to advance both within and around the Cajueiro Central resource, in tandem with drilling of several previously untested porphyry targets across the Cajueiro district. Results from initial drillholes in the current program at Cajueiro Central confirm the style, width and grade of structures extending laterally beyond the existing resource. Our objectives are to add additional ounces to the current inventory and to increase confidence in the existing resource estimate by converting Inferred resources to Indicated resources. Our second drill rig is focused on the initial drill testing of the previously untested district targets at Mombaque and Guillermo. Together with ongoing drilling at the Cajueiro and Maria Bonita mineral resources, we expect this will generate a steady flow of drill results in the coming months.”

The Cajueiro district is located approximately 75km NW of the town of Alta Floresta in the state of Mato Grosso in central western Brazil. The project is easily accessible by road, lies on open farmland and has grid power and a local water supply. Cajueiro is the most advanced of the key projects that Altamira controls in the region.

The Cajueiro district consists of two independently estimated gold mineral resources at Cajueiro Central and Maria Bonita, plus a series of eight additional untested exploration targets within a radius of 8km of Cajueiro Central.

The Cajueiro Central area has a current open pit resource of 5.66Mt at 1.02 g/t gold for a total of 185,000 oz in the Indicated Resource category and 12.66Mt at 1.26 g/t gold for a total of 515,000 oz in the Inferred Resource category (estimated using a cut-off grade of 0.25 g/t Au and a gold price of US$1,500/oz).

The Maria Bonita open-pit resource consists of Indicated Resources of 24.19Mt at 0.46 g/t gold (for a total of 357,800 oz) and Inferred Resources of 25.64Mt at 0.44 g/t gold (for a total of 362,400 oz). These resources were calculated using a 0.2 g/t gold cut-off grade and a gold price of US$2,780/oz. These resources include near-surface saprolite Indicated Resources of 2.02Mt at 0.59 g/t gold (38,000 oz) and Inferred Resources of 0.68Mt at 0.40 g/t gold (8,700 oz).

The Maria Bonita porphyry gold deposit forms part of a district-scale portfolio of prospects that are interpreted as having a similar geological origin. The Cajueiro area is characterized by a 15km stretch of former alluvial gold workings along the Teles Pires river. The source of some of this alluvial gold is related to a pronounced east-west corridor of gold anomalies in soils and rock chips and a set of sub-cropping intrusions extending east-west over 8km, implying the presence of a long-standing and deep-seated crustal structure.

The Cajueiro Central resource includes several subsectors, with the majority (54%) of contained gold within the northern Baldo subsector. In the current drill program, five diamond drillholes have been completed to date.

Drilling has commenced at the previously untested targets Mombaque and Guillermo. The Mombaque prospect, located about 1.6 km east of the Maria Bonita discovery, hosts a significant gold-in-soil anomaly with porphyry-style alteration and quartz veining at surface that suggests a concealed mineralized system ripe for drilling.

At the Guillermo target, 2.5 km northeast of the Cajueiro Central area, rock grab sampling returned high-grade gold up to 39 g/t and surrounding soil anomalies outline an extensive target area now being drill tested for the first time.

The company has completed construction of a new, low-cost modular exploration camp at its Maria Bonita property. The facility comprises container accommodation, a site office, and purpose-built core logging and sample preparation areas. The Maria Bonita camp is expected to materially enhance logistics and operating efficiency for exploration and project development in the western Cajueiro license area.

Ongoing exploration and fieldwork at Cajueiro indicate the presence of multiple porphyry gold systems, reinforcing its potential for district-scale development. These hard-rock gold sources align with historical alluvial gold production, highlighting the region’s exceptional gold endowment and potential scalability.

With two independently established mineral resources, a highly prospective geological setting and a track record of significant discoveries, the company is well-positioned to unlock further value across its extensive land package.