Latest Prefeasibility Studies News

Alma Metals is pushing the Briggs Copper Project through a substantial drilling and metallurgical program, with a 2027 resource update planned to support a prefeasibility study. The project’s 932Mt resource contains about 2Mt of copper, but the company still faces the usual funding, technical and development hurdles of a large undeveloped mine.

Pilbara Gold has lifted the Mt York resource by 50% to 2.08 million ounces while advancing a prefeasibility study and restarting drilling at Roe Hills. The annual report also warns that planned exploration spending could require another capital raise within 12 months.

Audalia Resources has outlined a 24.2 million tonne Medcalf resource, a maiden 11.77 million tonne probable ore reserve and study economics of up to $227 million in NPV. But the ASX-listed developer also reported a $1.31 million loss, only $720,861 in cash and an auditor warning over its ability to continue as a going concern.

Stellar Resources has lifted its Heemskirk tin resource to 115.3kt of contained tin while technical studies move toward a prefeasibility study outcome. The company is better funded, but remains pre-revenue and faces the usual capital, permitting and execution hurdles of mine development.

Metals Australia has reported a 50 Mt graphite resource, a maiden 21.51 Mt probable ore reserve and strong study-stage economics for its Quebec project. The opportunity is substantial, but the company ended the year with just AUD 3.73 million in cash and no mining revenue.

Pilbara Gold has reported strong initial drill results from the Terra Prospect at Roe Hills, including 46 metres at 3.17g/t gold and a narrower high-grade hit of 4 metres at 9.91g/t. The results extend evidence of a mineralised corridor at least 1.5km long, although substantial drilling and follow-up work remain.

Latitude 66’s KSB project has returned a striking preliminary economic case, with a post-tax NPV8 of US$485 million and an 85% IRR at a US$3,500 per ounce gold price. The opportunity remains unbuilt, unfunded and subject to further study, permitting and a production target containing 10% Inferred Resources.

True North Copper is expanding its Mt Oxide copper district with the Aquila-Chidna discovery now stretching over 2.3km, while progressing a prefeasibility study at Cloncurry due late 2026.

American Tungsten & Antimony has commissioned Metso Finland to conduct a concept-level study for expanding ammonium paratungstate production at its Nevada Del Sol Refinery, aiming to bolster US domestic tungsten supply amid national security concerns.

Havilah Resources sees key milestones at Kalkaroo and Mutooroo projects, with Sandfire's $70 million prefeasibility study underway and Kantra Copper commencing Mutooroo evaluation. A shareholder distribution is targeted before year-end.

Pilbara Gold has reported significant extensions and thickening of gold mineralisation at its 2.1Moz Mt York Project, with half of its +50,000m 2026 drilling campaign completed and resource updates on the horizon.

Many Peaks Minerals has reported strong reverse circulation drilling results at its Ouarigue prospect in Côte d’Ivoire, confirming continuity and extensions of gold mineralisation over 800 metres of strike. The results bolster prospects for upgrading the resource and expanding its footprint ahead of a planned fourth-quarter Mineral Resource Estimate update.