Highlights
- First granite-hosted gold zone discovery at Hamelin’s Jazz prospect in West Tanami.
- Promising assay results from 3,667m aircore drilling program.
- Exploration to expand in early 2025 with deeper RC drilling plans.
Hamelin Gold (ASX:HMG) has identified a promising new granite-hosted gold mineralisation zone during its maiden aircore drilling at the Jazz prospect in the West Tanami region of Western Australia. This groundbreaking discovery marks the first instance of granite-hosted gold being detected in the region, unlocking a previously unexplored geological setting.
Hamelin’s Managing Director, Peter Bewick, explained that the scale of lateral and depth mineralisation in this system is unusual. Typically, oxide zones above non-mafic gold systems in the region are depleted, but this find presents a new opportunity for West Tanami’s gold potential.
The recent drilling campaign returned notable assay results, including:
- 16m @ 0.36 grams per tonne (g/t) gold, including 2m @ 1.4g/t from 38m.
- 2m @ 2.1g/t from 50m.
- 10m @ 0.45g/t from 36m, including 2m @ 1.9g/t from 44m.
This mineralisation, hosted within a low-zircon, high-silica granite, has been traced over two aircore traverses spaced 400m apart and remains open to the west. Such a geological setting is considered a favorable host for gold, drawing parallels to deposits such as Gruyere Mine (ASX:GOR), Granny Smith Mine (NYSE:GFI), King of the Hills (ASX:VAU) in Australia, and Snowline Gold’s (TSX-V:SGD) Valley project in Alaska.
The drilling targeted multi-element soil geochemical anomalies detected during a 2024 sampling program, employing the CSIRO’s Ultrafine technology. The 3,667m aircore program aimed to provide a deeper understanding of the geology and structure of the Jazz area.
Preliminary assessments suggest that the Jazz granitoid belongs to a suite of non-magnetic felsic intrusions prevalent in the West Tanami region. Its distinctive low-zircon, high-silica geochemistry offers an identifiable marker for future exploratory efforts.
Hamelin Gold plans to advance exploration in early 2025. The next phase will focus on reverse circulation (RC) drilling to investigate extensions of the mineralisation both along strike and at depth. The broader West Tanami Project spans an impressive 2,277km² along the Trans-Tanami structural corridor, also home to Newmont’s (ASX:NEM) prolific Callie Gold Deposit.
This discovery reinforces the West Tanami region's potential as one of Australia's most untapped gold-rich provinces.