Latest Mineral Resource Upgrades News

Explorers led the Materials tape as fresh drill stories and new ground deals pulled buyers into small caps. Big miners still delivered, but the loudest moves came from companies offering investors a near-term catalyst.

Tesoro Gold has reported exceptional high-grade gold intercepts 400 metres below the existing open pit at its Ternera Gold Deposit in Chile, signalling potential for a significantly longer mine life and an imminent resource upgrade.

A single exploration name blew the doors off the leaderboard, while two well-known uranium plays and a Nevada explorer sank hard. Behind the noise: deals got closer to completion, big raisings reset prices, and several “good news” gaps didn’t survive the week.

A single drill program in WA delivered a once-a-year spike, while several small caps fell hard after reopening with price gaps. This week also saw big money raised for gold and uranium builds, and a run of resource upgrades across critical minerals.

Brightstar Resources has reported impressive high-grade gold assay results from its 2025 drilling campaign at the Sandstone Hub, setting the stage for a significant Mineral Resource upgrade and Pre-Feasibility Study later this year.

Tivan Limited has upgraded its Speewah Fluorite Project resource, confirming it as one of the world’s largest high-grade fluorite deposits with significant growth potential. The update supports imminent feasibility study milestones and further drilling plans.

West Wits Mining has announced a substantial 44% increase in its gold resource at the Witwatersrand Basin Project, boosting the total to 7.24 million ounces and setting the stage for imminent production at Qala Shallows.

Brightstar Resources has completed its strategic acquisition of Aurumin Limited, consolidating its Sandstone gold assets and boosting production by 12% in the December quarter. The company also advanced key feasibility studies, underpinning a promising growth trajectory.

Zuleika Gold has resolved its long-running litigation with Catalyst Metals, receiving $46 million in cash and shares, with a further $2 million due soon. The company also upgraded its gold resources significantly, positioning itself for aggressive development and exploration.

Broken Hill Mines has delivered a standout December quarter with record mining rates at Rasp Mine, strong exploration results, and a robust financial position, setting the stage for accelerated growth in 2026.

Barton Gold Holdings has completed significant drilling upgrades and advanced feasibility studies across its South Australian projects, raising $15 million to support a targeted production restart by the end of 2026.

Mineral Resources Limited has upgraded its lithium production guidance and reported record iron ore shipments in Q2 FY26, alongside a significant reduction in net debt and a strategic joint venture with POSCO Holdings.