Altair Minerals Unveils 7g/t Gold at South Oko, Accelerates Drilling Plans

High-Grade Gold Confirmed at South Oko

Altair Minerals Limited (ASX: ALR) has delivered a significant exploration update from its Greater Oko Project in Guyana, with a grab sample from the South Oko (SOKO) prospect returning an impressive 7.03 grams per tonne (g/t) gold. This sample, collected from the base of a trench within a mafic volcanic unit, provides the first direct evidence of high-grade, in-situ gold mineralisation at the site, reinforcing the prospect’s potential.

The South Oko area has been the focus of a systematic trenching program, with five trenches covering approximately 1.3 kilometres of strike completed to date. Geological mapping and sampling have revealed key structural features, including sheared quartz veins and extensions of the Oko Shear zone; a structural corridor known to host multi-million-ounce gold deposits nearby. These findings align South Oko’s geology closely with world-class discoveries in the region.

Expanding Exploration with Drilling and Geophysics

Building on the encouraging trenching results, Altair is expanding its exploration scope by introducing a rotary air blast (RAB) drilling program at South Oko. This shallow drilling will run in parallel with the company’s maiden diamond drilling campaign at the North Peters prospect, scheduled to commence by mid-April. The RAB drilling is designed to efficiently test deeper saprolite profiles and refine target areas ahead of larger-scale diamond drilling at South Oko, expected to follow the North Peters program.

Altair has appointed OGD Drilling (Guyana) Inc. as its drill contractor, leveraging a trusted partnership with experienced personnel who have previously delivered over 200,000 metres of drilling in Guyana. The initial diamond drilling at North Peters will cover 3,000 to 5,000 metres, with a subsequent 10,000 to 15,000 metres planned at South Oko. This extensive campaign aims to accelerate target refinement and increase the probability of a major discovery.

Strategic Positioning in a Premier Gold Jurisdiction

Altair’s Greater Oko Project sits within the Guiana Shield, a rapidly emerging gold province that shares geological similarities with prolific West African gold belts. The project’s proximity to recent multi-million-ounce discoveries, including the nearby 5.9 million ounce Oko West deposit, underscores its strategic importance. Recent soil sampling at South Oko has delineated a compelling 2-kilometre gold-in-soil anomaly, larger than that which led to the Oko West discovery, and remains open for extension.

Complementary geophysical surveys, including magnetics and induced polarisation, are nearing completion and are expected to further refine exploration targets. Altair’s methodical approach combines geological, geochemical, and geophysical data to build a robust understanding of the mineralisation framework.

Legal Challenges and Future Outlook

Beyond Guyana, Altair is engaged in a legal dispute with BHP Olympic Dam Corporation over the Olympic Domain Project in South Australia. A hearing is scheduled for April 16, 2026, where both parties will argue competing applications related to discovery obligations. Altair remains committed to defending its exploration rights and ensuring the fair valuation of its assets.

CEO Faheem Ahmed highlighted the rapid progress across multiple fronts, emphasising the disciplined and scientific exploration approach. With drilling programs about to commence and a suite of high-impact catalysts on the horizon, Altair is positioning itself for a potentially transformative year.