Brightstar Resources Limited has completed two deep diamond drill holes at the Two Mile Hill deposit within the Sandstone Gold Project, intersecting a mineralised tonalite unit between 400m and 500m thick with more than 50 visible gold occurrences.

The ongoing ~3,400m extensional diamond program is testing the host tonalite intrusion at depth. Previous extensional drilling reported on 3 August 2026 interpreted the Two Mile Hill tonalite intrusion to be greater than 180m thick horizontally. The current deep diamond drilling has intersected downhole widths of 400m to 500m, increasing the interpreted horizontal thickness to greater than 300m at approximately 700m below surface.

Both completed drill holes extended beyond their planned targets and ended in mineralised tonalite, with alteration, quartz veining, and sulphide mineralisation observed throughout. This newly identified area at depth has been designated the Shirvington Zone. Two holes remain in the four-hole program.

“The intersection of more visible gold and significant thickness of the mineralised tonalite is extremely exciting for Two Mile Hill. We're seeing notably thicker tonalite, with downhole widths of 400-500m in both completed holes, and gold-bearing quartz veins logged throughout the tonalite unit. This new extension to the tonalite at depth, the 'Shirvington Zone', presents material upside to the interpreted dimensions of the host unit and the current Mineral Resource envelope.”

“Some of the individual gold intersections have been spectacular to see, which highlights how significant a mineralised system this tonalite-hosted deposit could be. We eagerly await the assays, as well as the upcoming diamond core from the remaining two holes of this exciting exploration drilling.”

— Alex Rovira, Managing Director

Brightstar operates as a Western Australian gold developer focused on building a multi-asset producer with a pathway to over 75,000 ounces per annum, positioning the Sandstone Gold Project as a core growth asset.

Visual estimates of mineral abundance are not a proxy for laboratory analyses. The core samples are scheduled for laboratory submission in August, with assay results from the Two Mile Hill diamond drilling program anticipated in late September 2026. Brightstar is also targeting the delivery of a pre-feasibility study for the Sandstone Gold Project in the second half of calendar year 2026.

Read the full announcement: Significant visible gold in 500m mineralised intersection