Latest Mineral Resource Estimates News

Vertex Minerals’ Reward Gold Mine produced 679 ounces in its first production year, but the transition came with a A$16.4 million loss, negative operating cash flow and a formal going-concern warning. The company now faces a narrow window to prove its mechanised mining plan can lift production before debt repayments and further funding decisions bite.

Osmond Resources’ preliminary study has put a US$2.31 billion post-tax NPV on its Spanish rare earths and mineral sands project, but the headline economics rest on a scoping-level model and a US$300 million funding requirement. The next test is whether drilling, metallurgy, permitting and financing can turn the attractive concept into a financeable mine.

Unity Metals has extended its Camp stockwork gold discovery in Cambodia by 35 metres to the northeast, with a new hole returning 1 metre at 10.2 grams per tonne gold. The mineralisation remains open at depth and along strike, although a nearby southwest test returned no significant intersections.

Aurum Resources has reported its best-ever grade-thickness intercept at the Boundiali Gold Project, led by 28.8 metres at 22.92 g/t gold from the BST1 deposit. The results are intended to support an early fourth-quarter resource update and a definitive feasibility study due late in 2026.

Kantra Copper has intersected 70 metres at 1.18% copper and 0.24 grams per tonne gold at the Nugent lode, extending mineralisation below its existing resource model. The results arrive ahead of a 2026 Mineral Resource Estimate scheduled for late October.

Marmota has reported multiple high-grade gold intersections from the first assays at Mainwood, the southern extension of its Greenewood discovery in South Australia. Results from only 15 of 84 sections include 4 metres at 15 grams per tonne gold, while drilling and further assays continue.

Terra Metals has reported its largest continuous high-grade reef yet at the Southwest PGM-copper-nickel discovery, with a 336.9-metre intercept among new assay results. Heritage access is now cleared across the drilling footprint, while more than 40,000 assays remain pending ahead of a maiden resource estimate planned for Q1 2027.

Patriot Resources has established a 31.4 million-ounce silver-equivalent inferred resource at its Tassa project in Peru, but the company's annual report warns that further capital raising is required to sustain operations. The explorer recorded a $4.82 million loss and remains dependent on final drilling approvals.

Antimony Resources has moved closer to first production in Mexico, but its FY2026 annual report carries a material going-concern warning after a A$7.0 million loss and sharply reduced cash reserves. The company now faces the harder test of turning its Tecomatlán plant and Los Lirios project into cash-generating operations.

Barkly Rare Earths has entered its first full year as an ASX-listed explorer with A$5.38 million in cash, a 10,000-metre drilling programme underway and an early 99% magnet rare earth oxide extraction result. The technical signals are encouraging, but both the drilling data and metallurgy remain at an early stage.

Ragnar Metals has identified at least five interpreted mineralised shoots at its Harnäs gold project in Sweden, but the exploration-led company ended FY2026 with only $233,220 in cash. The annual report also restates FY2025 after previously omitted Kaiser Reef options were recognised at $779,288.

Caprice Resources has put its Murchison gold portfolio at the centre of a larger exploration campaign after extending Vadrians mineralisation and raising A$12.8 million. The company remains pre-production and loss-making, with a maiden resource estimate still to come.