Australian tin explorer Stellar Resources (ASX: SRZ) has increased the Heemskirk tin resource in Tasmania to over 100 kt tin contained.
The company boosted the size of the Queen Hill deposit, part of the Heemskirk project, by 41% to 4.11 Mt at 0.85% Sn for 34,900 tonnes contained tin.
The increase from the 2023 resource, which totalled 2.09 Mt at 1.18% Sn for 24,700 tonnes contained tin, is due to improved resource continuity and a lower cut-off grade enabled by significantly higher tin prices.
Alongside the other project deposits and the St Dizier satellite deposit, the total project mineral resource base now stands at 101,900 tonnes contained tin.
The project remains the highest-grade tin resource in development in Australia and the third highest globally after Cornish Metals’ South Crofty and Minsur’s Nazareth.
Stellar Resources’ Managing Director, Simon Taylor, said breaking the 100 kt mark was a “major milestone” and “the project continues to demonstrate its outstanding high-grade characteristics”.
The company is due to publish a new MRE for another one of the project deposits, the Severn deposit, which they expect to expand the resource base further, and they plan to complete a prefeasibility study in H1 2026.
Our view: 2026 promises to be a strong year for Stellar Resources with an expanded resource base and the completion of a prefeasibility study. ITA looks forward to further mine studies as the company progresses the Heemskirk project towards production.
Stellar Resources is a member of ITA’s Explorers & Developers Group.
