Brightstar Resources (ASX: BTR) has reported further visible gold from diamond drilling at the Two Mile Hill deposit, part of the Sandstone gold project in Western Australia.

The company said the recent drilling, which is targeting the host tonalite intrusion at depth, has highlighted significant mineralisation in a much wider tonalite unit.

Across the two holes completed so far, Brightstar logged 53 individual occurrences of visible gold. Two holes remain in the 3,400m program.

Managing director Alex Rovira said the combination of additional visible gold and the thickness of the mineralised tonalite was “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,” Mr Rovira said. “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.”

Brightstar said assay results from previous Two Mile Hill diamond drilling programs are expected to be reported shortly. Those earlier holes formed part of infill-oriented drilling for the pre-feasibility study, so the new results are being watched alongside work that is aimed at refining the project’s resource and development framework.

“Excitingly, Brightstar’s on-going exploration success at our Two Mile Hill and Bull Oak deposits has drastically improved our understanding of the significance of these felsic intrusive units in Sandstone,” Mr Rovira said.

“There remain up to ten geophysical analogues in the central Sandstone area, proximal to Two Mile Hill, that remain undrilled and represent opportunities for multiple mineralised felsic intrusives throughout the Sandstone Greenstone Belt.”

The combined Two Mile Hill-Shillington deposit currently hosts a gold mineral resource estimate of 731,000 ounces at 1.6 grams per tonne (g/t).

BTR was up 8.76% to 52.8¢. Market capitalisation was $532.4 million.

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