Brightstar delivers more shallow, high-grade hits across Sandstone Hub

Konrad Forrest
Brightstar

20 August 2025 | Subiaco, WA – Brightstar Resources (ASX:BTR) has reported another round of strong assays from 87 RC holes (~11,000m) across the Sandstone Hub, extending shallow mineralisation at multiple deposits and prospects as part of its ~100,000m growth program underpinning a PFS due in 2026.

Standout results include:

  • Musketeer: 8m @ 4.50g/t Au from 95m (incl. 1m @ 19.5g/t), 4m @ 4.85g/t from 99m, 5m @ 4.12g/t from 157m; infill hits of 4m @ 5.50g/t from 82m (incl. 1m @ 20.1g/t) and 6m @ 3.47g/t from 94m.

  • Indomitable East: 26m @ 1.39g/t from 22m (incl. 1m @ 10.4g/t) and 4m @ 2.06g/t from 189m.

  • Cessna: 6m @ 6.91g/t from 28m (incl. 4m @ 9.44g/t) and 9m @ 2.20g/t from 18m (incl. 1m @ 12.4g/t).

  • Lord Henry / Lords Corridor: 3m @ 9.29g/t from 55m (incl. 1m @ 25.1g/t) and 4m @ 19.3g/t from 98m (incl. 1m @ 58.5g/t); plus 24m @ 1.14g/t from 16m (incl. 4m @ 3.77g/t).

  • Duplex / Whistler (Montague): 2m @ 7.94g/t from 145m (incl. 1m @ 15.4g/t); 5m @ 2.71g/t from 154m (incl. 1m @ 9.93g/t); and 3m @ 3.10g/t from 30m (incl. 1m @ 6.26g/t).

Brightstar says the new results support material resource growth at several deposits while confirming broader prospectivity outside the current 1.5Moz @ 1.5g/t Au MRE. Following completion of the Aurumin merger now underway, Brightstar expects to control ~2.4Moz @ 1.5g/t Au in the Sandstone district. Rigs have temporarily shifted to the Menzies and Laverton hubs (Second Fortune, Fish, Yunndaga) before returning to Sandstone in early September, with ~100km of drilling planned in FY26.

Managing Director Alex Rovira said the assays “demonstrate the potential for material resource growth” as the company advances infill, geotechnical and metallurgical programs to keep the Sandstone PFS on schedule for Q2 2026.

Source: Brightstar Resources ASX release, 20 August 2025.