Latest Rio Tinto News

Antipa Minerals’ updated Pre-Feasibility Study test-work validates a conventional gold-copper processing route with strong recoveries and reveals geotechnical improvements that could reduce underground mining at Minyari Dome.

North Stawell Minerals (ASX:NSM) has expanded its gold footprint north of the Stawell Gold Mine, defining an 800-metre gold trend at Darlington and confirming significant mineralisation at Caledonia through re-split air core drilling assays.

ABx Group has released an economic assessment showing its ALCORE process can produce hydrogen fluoride at significantly lower costs than traditional fluorspar methods, potentially reshaping Australia's fluorine chemical supply chain.

Middle Island Resources has extended the gold-silver-base metal mineralisation at its Bobija Project in Serbia to an 80,000m² footprint, with broad, shallow intersections linking multiple zones into a continuous system that remains open in all directions.

Rimfire Pacific Mining’s initial metallurgical tests at the Murga Scandium Deposit reveal promising scandium recoveries using atmospheric leaching, a less complex method than industry norms. The company has launched longer-term tests to validate these findings, potentially reshaping the economics of its Fifield scandium resources.

Infinity Metals has secured a two-year exclusive option to acquire 100% of the high-grade Swansea copper mine in Arizona and raised A$2.25 million via a discounted placement to fund exploration and acquisition costs.

Avira Resources has completed 1,308 metres of reverse circulation drilling across the Maori Queen and Plantagenet prospects at Mt Cattlin, submitting initial samples for assay as it targets a maiden resource estimate by year-end.

Taruga Minerals has pinpointed seven high priority exploration targets at its Kol Mountain Project in Papua New Guinea, launching its first active field program focused on a large undrilled copper-gold porphyry anomaly and high-grade gold shear zone.

Iron Bear Resources (ASX:IBR) has detailed progress on its Canadian Iron Bear Project, highlighting a robust scoping study, a major joint venture with Vale, and strategic advantages in a growing direct reduction pellet market.

Barramundi Limited’s May update reveals a 2.3% adjusted NAV decline, weighed down by CSL’s earnings downgrade and Brambles’ operational setbacks, despite positive contributions from Xero and Credit Corp.

Tiger Gold has finalised its option to acquire LCL Resources’ Colombian gold assets with a $4.5 million payment, bringing total cash consideration to $7.5 million and strengthening LCL’s balance sheet ahead of a formal transfer on 11 June 2026.

Rimfire Pacific Mining will increase its interest in the Avondale Project to 60% after Golden Plains Resources vested its 40% stake. The project holds significant scandium deposits in NSW's Fifield District, with Rimfire set to manage the joint venture and fund future exploration alongside its partner.