Latest Metallurgical Optimisation News

West Cobar Metals has revealed a significant uplift in antimony grades at its Bulla Park deposit after reanalysing drill core with peroxide fusion digest, suggesting the deposit's contained metal and economic potential may be materially higher than previously reported.

Krakatoa Resources has restructured its acquisition of the Zopkhito Antimony-Gold Project in Georgia, adopting a staged earn-in model that reduces upfront payments and prioritises capital deployment into exploration and development activities for 2026.

IRIS Metals has fortified its balance sheet with a A$5.5 million placement and is progressing towards an updated lithium-rubidium resource at Beecher while executing a farm-in deal for a tungsten project in Montana, reinforcing its diversified US critical minerals strategy.

Axel REE is accelerating its in situ recovery (ISR) mining trials at the Caladão Project in Brazil, targeting rare earth elements and gallium extraction through a low-cost, environmentally friendly method. The company is fully funded for pilot wellfield trials at the Woolrich deposit, with expansion potential at Paraíso and Tiger Creek.

Barton Gold has wrapped up diamond and reverse circulation drilling at its Challenger Gold Project, advancing a Definitive Feasibility Study targeting a low-risk Stage 1 open pit operation by the second half of 2026.

Jindalee Lithium Limited's US subsidiary, HiTech Minerals, has signed a binding agreement with Constellation Acquisition Corp I to form US Elemental Inc., a NASDAQ-listed company holding the McDermitt Lithium Project. The transaction values the new entity at approximately US$571 million enterprise value, with Jindalee retaining majority ownership.

Locksley Resources has initiated a four-hole diamond drilling program at its El Campo Rare Earth Element Prospect within the Mojave Project, aiming to test high-grade mineralisation continuity near a major US REE mine.

Mount Ridley Mines Limited has validated its heavy rare earth element resource through historical metallurgical testwork showing recoveries up to 86.5% across the Grass Patch Complex. The results underpin ongoing development efforts and metallurgical optimisation plans.

Viking Mines has achieved a remarkable upgrade to a 63.6% tungsten concentrate at its Linka Project in Nevada, signalling a rapid, low-capital pathway to production amid soaring global tungsten prices.

Delta Lithium has successfully produced battery-grade lithium carbonate and high-grade rubidium carbonate from mica concentrate at its Mt Ida project, confirming strong recovery rates and potential new revenue streams.

Barton Gold Holdings has completed a significant drilling campaign at its Challenger Gold Project, setting the stage for a pivotal feasibility study and potential production restart by mid-2026.

Rumble Resources has reported promising metallurgical testwork from its Western Queen Gold and Tungsten Project, confirming the potential for high-grade tungsten concentrate production alongside gold. The company is advancing a scoping study to fast-track tungsten mining and processing amid soaring global prices.