St Arnaud Drilling Yields 6.9m at 4.24g/t Gold Beyond Maiden Resource

Drilling Success at St Arnaud Comstock

Aureka Limited has announced encouraging results from its inaugural diamond drilling program at the St Arnaud Comstock gold project in Victoria. The first hole, 25NED001, delivered multiple high-grade gold intercepts, including standout intervals of 6.9 metres at 4.24 grams per tonne (g/t) gold and 3.2 metres at 4.71 g/t gold, both occurring well below the existing resource boundary. These results confirm mineralisation continuity down dip and beyond the maiden inferred JORC Mineral Resource Estimate (MRE) released just last month.

Expanding the Resource Footprint

The maiden MRE, announced in June 2025, quantified 1.45 million tonnes at 1.21 g/t gold for approximately 56,500 ounces. The new drilling results extend mineralisation roughly 190 to 230 metres below previous intercepts, highlighting the potential to grow the resource inventory significantly. The mineralisation is structurally hosted within sheared stylolitic quartz veins accompanied by elevated sulphide minerals such as pyrite, arsenopyrite, galena, and sphalerite, elements often associated with higher gold grades.

Geological Context and Exploration Strategy

The Comstock prospect lies within the Stawell Geological Zone, part of the Lachlan Orogen, an area historically prolific for gold production. The project’s geology features tightly folded turbidites and a dominant shear zone that controls the gold-bearing quartz reefs. Aureka’s ongoing diamond drilling program aims to delineate further down dip and plunge extensions of these reefs, with a view to expanding the current resource and better defining the steep plunging ore shoots suggested by the high-grade intercepts.

Strategic Location and Development Outlook

Importantly, the Comstock project is situated within trucking distance of several operational gold processing mills in Victoria, offering logistical advantages for potential future development. With the gold price environment remaining robust, Aureka is preparing to initiate community engagement and regulatory approval processes to advance the project towards production readiness.

Looking Ahead

The company’s Managing Director, James Gurry, expressed optimism about the continuity of mineralisation and the potential to rapidly augment Aureka’s global resource base. As drilling continues, the market will be watching closely for further assay results that could underpin a resource upgrade and enhance the project’s economic prospects.