Speewah Nth Rock Samples Show Antimony at 4.54%, Silver 517ppm, Copper 3.62%

Initial Sampling Confirms Valuable Mineralisation

Tambourah Metals Ltd (ASX – TMB) has reported promising assay results from its first rock chip sampling program at the Speewah Nth project in Western Australia's Kimberley region. The samples, collected along the 6-kilometre Chapman-Catto corridor, revealed high-grade antimony concentrations up to 4.54%, silver levels reaching 517ppm, and copper at 3.62%. These findings reaffirm historical surface sampling and drilling data that had previously indicated anomalous antimony and silver mineralisation in the area.

Strategic Importance of Speewah Nth

Located approximately 110 kilometres southwest of Kununurra, the Speewah Nth project covers 181 square kilometres over the northern half of the Speewah Dome, a geologically complex structure known for hosting various mineral deposits. The area is gaining increased attention due to the nearby Speewah Fluorite deposit, which has been granted major project status and is attracting investment from Sumitomo Corporation. Tambourah’s exploration efforts here are well-timed to capitalise on growing infrastructure and development in the region.

Focus on Antimony Amid Rising Prices

Tambourah Metals is prioritising antimony exploration at Speewah Nth, motivated by a significant price surge from US$12,000 to US$60,000 per tonne. The company’s Executive Chairperson, Rita Brooks, highlighted the importance of the initial results, noting that the assays not only confirm historic data but also identify new antimony-silver targets. The company plans to extend geological mapping and sampling along the eastern margin of the Speewah Dome to better define these targets ahead of drilling.

Next Steps and Exploration Outlook

Following this initial success, Tambourah intends to continue outcrop mapping and rock chip sampling to delineate the extent of mineralisation. The identification of multiple antimony-silver prospects provides a robust pipeline of targets for upcoming drilling campaigns. While the current results stem from surface samples and float material, which do not yet indicate mineralisation continuity or thickness, they offer a compelling foundation for more detailed exploration.

Broader Implications for Critical Minerals

Tambourah Metals’ focus on critical minerals like antimony aligns with broader market trends emphasizing supply security for materials essential to emerging technologies and green energy. The Speewah Nth project’s polymetallic potential, including copper and silver alongside antimony, enhances its strategic value. As the company advances towards drilling, investors will be watching closely for resource definition and potential development pathways.