Tanami Gold Unveils High-Grade Hits at Groundrush and Western Dolerite

Strong Drilling Results at Groundrush

Tanami Gold NL has announced the receipt of final assay results from its recent drilling campaigns at the Groundrush Gold Deposit and the Western Dolerite Prospect, both key components of the Central Tanami Project Joint Venture in Australia's Northern Territory. The Groundrush program comprised 27 holes using reverse circulation and diamond core drilling methods, targeting the southern edge of the deposit to bolster resource confidence ahead of forthcoming updates and mining studies.

The drilling returned several notable high-grade gold intercepts, including a standout 0.90 metres grading 29.30 grams per tonne (g/t) from 227.10 metres depth, and 2.00 metres at 20.02 g/t from 130 metres. Other significant intercepts ranged between 3 to 7 g/t over multiple metres, underscoring the deposit’s robust mineralisation continuity.

Western Dolerite Prospect Shows Encouraging Extension

At the Western Dolerite Prospect, located adjacent to Groundrush, a 20-hole drilling program aimed to test down-dip and strike extensions of the mineralised dolerite unit. The best intercept here was 14.30 metres at 1.75 g/t gold, indicating potential for resource growth beyond the known boundaries. While these grades are lower than Groundrush’s peak values, the intercept length suggests a meaningful tonnage could be present.

Strategic Joint Venture and Ownership Update

The Central Tanami Project is a 50, 50 joint venture between Tanami Gold and Northern Star Resources Limited, covering a substantial 2,108 square kilometre tenement package in a prolific gold region. Notably, Northern Star’s 50% interest in the JV, along with adjacent exploration tenure, is under agreement to be acquired by Mount Gibson Iron Limited for A$50 million. This transaction, announced earlier in July 2025, could bring new strategic impetus to the project’s development.

Groundrush itself has a history of production, having yielded over 600,000 ounces of gold at an average grade of 4.0 g/t from open-pit mining between 2001 and 2005. The recent drilling aims to refine and expand the resource base, particularly at the deposit’s southern margin where confidence has been lower.

Technical Rigor and Next Steps

The drilling and sampling adhered to industry best practices, including rigorous quality control protocols and detailed geological logging. Assays were conducted at accredited laboratories using fire assay methods, ensuring reliability of the results. The company has indicated that final assays from other prospects within the joint venture, such as Defa and Jims Gold Mine, are pending and will be released in due course.

Looking ahead, Tanami Gold and its JV partners plan to incorporate these new data into updated resource models and mining studies, which will be critical for advancing the project towards potential development and production phases.