Zenith Minerals has extended high-grade zones at its Red Mountain breccia-pipe gold discovery in Queensland, returning exceptional reverse circulation (RC) drilling hits of 93 metres grading 0.43 grams per tonne (g/t) gold and 34 metres grading 0.39g/t gold.
The company’s results flowed from a recent RC drilling program on the emerging Red Mountain intrusion-related gold (IRG) deposit. Previously reported drilling included the standout hit of 122 metres grading 1.28g/t gold from 209 metres, including 55m at 2.18g/t gold within a thick rhyolite sill.
Zenith Minerals managing director Andrew Smith
Zenith says it is improving its understanding of the shape and size of the breccia pipe with each drillhole. The company has mapped out the northern and southern margins of the pipe, identifying a target corridor for further drilling. It says the breccia pipe remains open to the northwest and southeast, with gold hits increasing in grade and width to the west. Another drillhole hit 99m grading 0.28g/t gold, which has stretched the eastern pipe margin laterally to the east.
After successfully completing the RC drilling, the company has ‘upped the ante’ and kicked off diamond drilling, with a single diamond tail planned to extend mineralisation to at least 500 metres below surface within the pipe. The hole will also test the potential for a high-grade feeder pipe – a feature often seen in other Queensland breccia pipe systems.
‘These latest assays provide our clearest view yet of the upper part of the Red Mountain.’
Zenith Minerals managing director Andrew Smith
Zenith says geological observations of drilling core at Red Mountain have bolstered its belief that the breccias and volcanic rock types could be similar to those of the nearby Mt Wright breccia pipe, previously operated by Resolute Mining. During its 11-year mine life, Mt Wright produced more than 1 million ounces of gold from a breccia pipe.
Similar breccia-hosted pipes in Queensland include the now-closed Mt Leyshon deposit, which produced 3.5 million ounces.
Zenith Minerals managing director Andrew Smith said: “These latest assays complete the RC dataset from the October 2025 program and provide our clearest view yet of how the upper part of the Red Mountain system fits together. We now have continuous RC coverage along the northwest trend, with gold mineralisation tracking the breccia margin and strengthening where the rhyolite thickens and the breccia–rhyolite contact is best developed.”
Zenith’s primary focus is its gold portfolio, which includes the company’s Dulcie gold project in Western Australia’s Southern Cross greenstone belt. The company’s Dulcie Far North prospect already has a mineral resource of 8.2 million tonnes grading 1.2 g/t for 302,000 gold ounces. Meanwhile, at its Dulcie target, Zenith is running two rigs across a six-kilometre corridor, looking for a repeat performance.
