Cornish Metals Inc (AIM:CUSN, TSX-V:CUSN, OTC:SBWFF) said ongoing drilling at Carn Brea at the South Crofty mine in Cornwall has confirmed the Wide Formation as a new large, tin-bearing exploration structure as well as hitting a potential discovery.
With drilling designed to confirm and test the structure of Wide Formation, finding mineralised structures above and below is a “bonus”, said Richard Williams, chief executive.
The discovery, Great Flat Lode Splay, lies beneath the historically mined Great Flat Lode and was also previously unrecognised, he added.
“The discovery of the Great Flat Lode Splay and the other new zones of high-grade tin mineralisation demonstrates the exploration upside of this area, which we view as having tremendous potential to add to our current Mineral Resource base at South Crofty," said Williams.
Two drill rigs are on site in Cornwall currently, testing the continuity of tin mineralisation within the Wide Formation over an area measuring 2,500 metres (m) along strike (northeast to southwest) and 525m downdip to the southeast.
Multiple steeply dipping high-grade tin zones, mainly located between the Great Flat Lode and the Wide Formation, were intersected, said the statement, though more work is needed to determine the orientation and true thickness of these zones.
Great Flat Lode Splay, meanwhile, is mineralised, varies up to 9m in thickness and represents an important new exploration target less than 280m below the surface.