Altair Targets 15km Strike with 778 Soil Samples in Oko Shear Exploration

Altair’s Ambitious Exploration Campaign Begins

Altair Minerals Limited (ASX, ALR) has embarked on a landmark geochemical exploration program at its Greater Oko Project in Guyana, marking the largest systematic sampling effort ever undertaken on the Oko Shear Zone. Spanning a 15-kilometre strike length, this program aims to generate multiple high-potential drill targets on a proven Tier-1 mineralised structure that has already yielded approximately 9 million ounces of gold from just 5 kilometres of drilling to the north.

The program includes over 700 soil samples spaced systematically across the strike, complemented by more than 3 kilometres of trenching, detailed geological and structural mapping, and grab sampling. Initial assay results are expected in November 2025, with the company adopting an agile approach to expand the program based on emerging data.

Strategic Positioning in a Premier Gold District

Altair’s Greater Oko Project holds a dominant and contiguous land position in one of the most promising greenstone belts globally, located in Guyana’s Guiana Shield. The project lies just 1.5 kilometres from the Oko West discovery, a 5.9 million ounce gold deposit acquired for $1 billion by GMining Ventures, and 3.5 kilometres from the OMZ and Ghanie discoveries, which collectively hold around 3 million ounces of gold and command a $1 billion market capitalisation.

This proximity to major discoveries underscores the potential of Altair’s targets, particularly the E1 and W1 anomalies. These targets exhibit gold-in-soil footprints exceeding 100 parts per billion, larger than those that led to the Oko West discovery, and coincide with the largest magnetic anomalies on the shear zone; key indicators of significant mineralisation.

World-Class Team and Rigorous Methodology

Altair has assembled a highly experienced exploration team, including Pascal Van Osta and Rich Munson, whose previous collaboration contributed to the 10 million ounce Toroparu discovery in Guyana. The program is supported by specialists from GexplOre, bringing expertise in drill targeting and structural geology specific to the Guiana Shield.

The methodical approach involves a 778-sample soil grid spaced 100 metres apart, trenching to test in-situ mineralisation, and ongoing geological mapping. This comprehensive fieldwork is designed to convert geochemical anomalies into multiple drill-ready targets, setting the stage for a maiden drilling campaign expected to commence simultaneously at South Oko and North Peters.

Looking Ahead, A Year of Exploration Catalysts

The geochemical program marks the first phase of an uninterrupted 12-month exploration campaign that will include geophysics, detailed mapping, structural analysis, and drilling. Altair’s CEO Faheem Ahmed emphasised the company’s ambition to replicate the success of neighbouring projects that have evolved into billion-dollar assets, leveraging Altair’s unrivalled land position and disciplined exploration strategy.

Due diligence and legal processes related to the project acquisition are progressing ahead of schedule, with completion anticipated before 8 October 2025. As Guyana continues to emerge as a premier gold jurisdiction with significant underexplored potential, Altair’s Greater Oko Project stands out as a rare, large-scale opportunity in a stable and pro-mining environment.