It has announced a major lithium field extension and new tin discovery in Tregonning, Cornwall, UK.
The results come from Cornish Tin & Lithium’s Phase 3 exploration drilling programme at the Tregonning Project, between September 2025 and January 2026.
Drilling primarily targeted lithium-enriched aplite-pegmatite sheets in the recently identified Tregonning South extension area, but also intercepted an extensive tin system.
The drilling confirms that a lithium-bearing rock formation called the Newall Formation continues far beyond the area where it was first discovered at Tregonning North.
Previous drilling in the area found high lithium concentrations, including an interval of 0.3m grading 1.33% Li₂O, with a peak grade of 1.42% Li₂O. The Phase 3 results show this system extends for about 3.27km from Tregonning North to Tregonning South.
Several lithium-bearing layers have been identified at different depths across the area, suggesting a larger resource than previously thought.
Phase 3 also intercepted a tin mineralisation system across Tregonning South, including 10 tin lodes and an associated sheeted vein system.
High-grade tin mineralisation has been encountered across multiple lodes, including up to 2.69% tin in Norcross No.1 Lode, 1.26% tin in Rib North Lode and 1.68% tin in Rib South Lode.
To reflect its expanding focus on critical minerals, recent exploration results and dual-commodity focus, the company is announcing its new name, Cornish Tin & Lithium.
Extracted from the IOM3 website, read more here