Cornish Tin & Lithium find field extension, make new discovery at Tregonning 

Cornish Tin & Lithium Limited (CTL), formerly Cornish Tin Limited, announced Wednesday results from its Phase 3 exploration drilling program at the Tregonning project. 
 
The drilling program conducted between September 2025 and January 2026, was designed to target lithium-enriched aplite-pegmatite sheets in the newly identified Tregonning South extension area.  

Drilling has also intercepted an extensive new tin system, as well as very successful lithium results, the company said.  
 
The drilling confirmed that a newly identified lithium-bearing rock formation, called the Newall Formation, continues far beyond the area where it was first discovered at Tregonning North. Earlier drilling there found high lithium concentrations, including an interval of 0.3 metres grading 1.33% Li₂O, with peak grade of 1.42% Li₂O. 

The Phase 3 results show that this lithium-bearing system extends for about 3.27 kilometres from Tregonning North to Tregonning South. Drilling also found several lithium-bearing layers at different depths across the area, suggesting the project may contain a larger lithium resource than previously thought. 

Phase 3 drilling also intercepted a new tin mineralisation system across Tregonning South, including ten tin lodes identified to date and an associated sheeted vein system, highlighting the project’s growing potential as a significant source of both lithium and tin.  

High-grade tin mineralisation was 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. 
 
Building on the success of our previous drilling programs at Wheal Vor and Tregonning North, the results of Phase 3 at Tregonning South are also excellent,”  CEO Sally Norcross-Webb said in a news release.  

“Never before explored systematically, Tregonning South clearly has spectacular potential. As a combined mining operation, our Project Areas in West Cornwall could make a very significant and positive contribution to Cornwall’s economy and the critical minerals resilience of the UK and Europe.”