Cornish Metals Inc (AIM:CUSN, TSX-V:CUSN, OTC:SBWFF) reported high-grade copper mineralisation from an ongoing drilling programme at its United Downs copper-tin project in Cornwall.
One drill hole (UD21_011A) intersected five parallel zones of high-grade copper/tin/silver mineralisation beneath the historic United Mine. The mine had operated from around 1700 to 1870 as a high-grade underground copper mine with historical grades reported to be in excess of 7.5% copper.
High-grade mineralisation has now been confirmed over a 500 metre (m) strike length and is open along strike and to depth, the AIM-traded exploration company said.
"Management believes that these latest intersections clearly demonstrate the potential for United Downs to host a copper/tin/silver mineral resource to complement the identified tin mineral resource at South Crofty,” said chief executive Richard Williams.
“Confirmation that high-grade mineralisation continues beneath the historic United Mines validates the exploration potential we believe exists throughout Cornwall and within our mineral rights holdings.”
Drill hole UD21_011A intersected 2.53m grading 4.61% copper and 0.05% tin, including a 0.78m section at 10.40% copper, from a depth of 652.55m. The best results from this hole also include a 2.73m intersection at 4.45% copper and 0.12% tin from a depth of 676.51m.
"It is very interesting to see the tin grades starting to appear in the deeper intersections, which adds weight to our theory that the whole United Downs area is prospective for tin beneath the old copper mines, the same zonation that is clearly evident at South Crofty, just a few kilometres to the west," said Williams
The United Downs project covers or is located immediately adjacent to, four former copper and tin producing mines.