Brightstar Strikes 10m at 43.8g/t Gold in Sandstone Drilling Surge

Exceptional High-Grade Intercepts at Musketeer

Brightstar Resources Limited (ASX – BTR) has reported outstanding assay results from its ongoing drilling campaign at the Sandstone Hub in Western Australia’s East Murchison region. Among the highlights is a remarkable 10-metre intercept grading 43.8 grams per tonne (g/t) gold, including a blistering 1 metre at 356 g/t Au, encountered at the Musketeer deposit within the Indomitable Camp.

This intercept is part of a broader +80,000-metre reverse circulation (RC) drilling program aimed at both infill and extensional resource definition. The Musketeer deposit currently holds an inferred resource of 59,000 ounces at 1.3 g/t Au, but these new high-grade results suggest zones of significantly elevated gold grades that could materially enhance the resource base.

Advancing Resource Classification and Study Milestones

The drilling program’s objective is to upgrade the Mineral Resource Estimate (MRE) classification from Inferred to Indicated within a conceptual pit shell optimised at a conservative gold price of AUD 2,500 per ounce. This upgrade is a critical step towards the delivery of a Pre-Feasibility Study (PFS) targeted for early 2026, which will assess the economic viability of mining the deposit.

Brightstar’s Managing Director, Alex Rovira, emphasised the significance of the results, noting that the Musketeer deposit remains open both at depth and along strike. The company is already planning follow-up drilling to delineate these high-grade shoots further and to test deeper extensions, aiming for meaningful resource growth.

Broader Exploration Momentum Across Hubs

Beyond Sandstone, Brightstar is actively drilling at other key assets. A second RC rig has recently commenced work at the Fish Mine within the Laverton Hub, preparing for diamond drilling to explore depth extensions. Following completion at Fish, the rig will move to the Menzies hub to continue drilling at Yunndaga, with diamond drilling planned thereafter.

The Sandstone Hub itself currently hosts a 1.5 million ounce gold resource at 1.5 g/t Au, with the Indomitable Camp contributing 288,000 ounces. The ongoing exploration and resource upgrade efforts are part of Brightstar’s broader strategy to consolidate and develop its portfolio of gold assets across Western Australia’s prolific goldfields.

Technical and Historical Context

The Musketeer deposit’s mineralisation is associated with banded iron formation within mafic-ultramafic rock packages, with gold concentrated along crosscutting structures. Drilling has been conducted orthogonal to these structures to ensure representative sampling. The recent program included 49 RC holes totaling approximately 4,700 metres, with assays pending for 15 holes.

Historical exploration by Western Mining Corporation, Herald, and Troy Resources laid the groundwork for current efforts, but Musketeer itself has not previously been mined. Brightstar’s systematic approach and modern drilling techniques are unlocking new potential in this underexplored area.