Altair Minerals Launches Diamond Drilling at North Peters in 75,000m Campaign

Diamond Drilling Commences at North Peters

Altair Minerals (ASX:ALR) has started diamond drilling at its North Peters prospect, marking the first active phase of its fully funded 75,000m Greater Oko exploration campaign in Guyana. This initial Phase I includes approximately 5,600m of diamond drilling and 2,000m of reverse circulation (RC) drilling at North Peters, alongside 15,000m of RC drilling planned at South Oko (SOKO) later this month.

The program aims to validate and refine the geological and structural model of the gold system at North Peters, which boasts broad and locally high-grade historic mineralisation over a 650m strike extent. Historic drill highlights include intervals such as 85m at 4.81g/t gold from 24m and 89m at 2.40g/t gold from 45m, with higher-grade shoots intersected near a regional thrust structure that remains largely untested beyond the historic drilling footprint.

Testing Structural Controls and Extensions

The Phase I diamond drilling focuses on infill holes averaging around 250m depth to improve the geological model and structural understanding. Complementary RC drilling, averaging 50m depth, will test shallow step-out targets 300-800m southwest of the current mineralisation envelope to identify potential extensions and priority zones for follow-up diamond drilling.

This dual approach is designed to interrogate the interpreted mineralised structure along the sheared contact between granodiorite and quartz monzonite porphyry, as well as a high-grade structure associated with a regional low-angle thrust fault. Altair’s recent remodelling efforts have materially strengthened this geological framework, which management suspects is part of a larger, structurally controlled regional gold system rather than an isolated shoot.

Scaling Up for Phase II and Regional Targets

Subject to Phase I results, Phase II at North Peters will focus on expanding the mineralised footprint along strike and regionally, targeting untested chargeability anomalies and the 1.1km unexplored zone between North Peters and the nearby Old Granny prospect. This phase aims to increase geological confidence and support a maiden JORC-compliant Mineral Resource estimate.

Altair retains flexibility to add up to two additional drill rigs in the fourth quarter, supported by expanded camps, logistics, and personnel across Greater Oko. The company’s operational footprint in Guyana has grown rapidly to approximately 200 staff, reflecting a strong commitment to sustained drilling and exploration activity over the next 18 months.

Greater Oko Within a Thriving Gold Province

The Greater Oko project covers 428 square kilometres within Guyana’s Guiana Shield, a region gaining prominence as a premier gold jurisdiction with geological continuity to West Africa’s prolific Birimian greenstone belts. The area is underexplored compared to its African counterparts but has recently seen major discoveries and multi-billion-dollar takeovers, including G2 Goldfields and Reunion Gold.

Altair’s program is well capitalised, underpinned by a robust cash position following a successful A$28.2 million placement led by Endeavour Mining, which now holds a 9.9% stake. The company’s strategy leverages scientific and systematic exploration, with recent appointments and technical collaborations aimed at accelerating discovery potential across Greater Oko.

With diamond drilling underway at North Peters and RC drilling imminent at South Oko, Altair is poised for a period rich in drilling results and high-impact exploration catalysts. The campaign’s success will hinge on assay outcomes and the ability to delineate scalable mineralisation in this emerging gold province.