Highlights

  • Brightstar identified 11 priority gold targets across the Two Mile Hill–Bull Oak corridor at Sandstone.
  • Seven targets have been earmarked for reverse-circulation drilling, with initial testing planned for November 2026.
  • Geophysical and geological information underpins the selection of prospective felsic intrusive bodies.
  • Historical drilling provides supporting indications, although most targets remain at an early exploration stage.
  • A Sandstone pre-feasibility study and resource update were targeted for the final quarter of 2026.

Brightstar Resources Limited explores, develops and advances gold Assets across Western Australia, through its Goldfields and Sandstone hubs. At Sandstone, Brightstar Resources Limited (ASX:BTR) has identified 11 priority exploration targets with geological characteristics resembling the Two Mile Hill and Bull Oak deposits. The November 2026 update outlines drilling plans and ongoing development studies.

Eleven Targets Across the Sandstone Corridor

The newly identified targets sit within the Two Mile Hill–Bull Oak corridor of the Sandstone greenstone belt. Brightstar Resources Limited (ASX:BTR) is seeking felsic intrusion-hosted gold systems, a geological setting associated with mineralisation at its established deposits. The company has grouped the prospects as Twin Shafts, Bullet, Mt Klempt, Mt Klempt South, Ammirati, Turley, Peanut, Workers Granite, Welcome Granite, Iron Duke and Freedom.

Seven prospects have been identified for reverse-circulation drilling, while the remaining targets require additional gravity data, field checks or preliminary exploration. Geological similarities do not establish an economic discovery.

How Geological Data Is Guiding Drilling

Target selection combined magnetic, gravity and radiometric surveys with surface geochemistry, geological mapping, historical workings and earlier drilling. A key indicator is a gravity low that may reflect a relatively low-density felsic intrusion surrounded by denser rocks. Brightstar is conducting closer-spaced ground gravity work to refine the interpretation and potentially identify further targets.

Earlier drilling offers selected points of reference. Twin Shafts returned a historical interval of 4 metres at 7.74 grams per tonne gold from 50 metres. Mt Klempt South recorded 9 metres at 2.70 grams per tonne from 16 metres, including 1 metre at 19.4 grams per tonne. Workers Granite also recorded 9 metres at 1.99 grams per tonne from 22 metres. These reported intervals are downhole lengths, and their true widths remain unconfirmed.

Two Mile Hill and Bull Oak Provide a Geological Reference

Two Mile Hill and Bull Oak provide the geological comparison underpinning the exploration strategy. At Two Mile Hill, the company reported a 2026 intercept of 226 metres at 3.11 grams per tonne gold from 284 metres. Another interval measured 305 metres at 1.33 grams per tonne from 584 metres. Bull Oak returned 167 metres at 2.07 grams per tonne from 104 metres in hole BORC26042.

Exploration Timetable and Development Milestones

Initial reverse-circulation drilling of the priority targets was planned to commence in November 2026, alongside completion of the ground gravity survey. A wider corridor programme is envisaged for 2027. Separately, approximately 6,500 metres of deep diamond drilling was continuing at Two Mile Hill, with further assays anticipated during November.

Brightstar Resources Limited (ASX:BTR) also targeted a Sandstone resource update and pre-feasibility study for the December 2026 quarter. At its separate Goldfields hub, construction of a 1.5-million-tonne-per-annum Laverton processing plant was progressing towards a targeted first-gold milestone in the June 2027 quarter. These remain planned milestones rather than completed outcomes.

Key Insights

Brightstar Resources Limited (ASX:BTR) is expanding the range of potential exploration sites at Sandstone while advancing studies on its more established deposits. The 11-target inventory creates a defined sequence for geological investigation, but gravity anomalies and historical intercepts do not independently establish new resources. Initial drilling, follow-up assays and the scheduled study work will provide the evidence needed to distinguish promising concepts from demonstrable project additions.