Adex Mining drilling boosts Mt. Pleasant reserves

A “wildcat hole” has Adex Mining (TSE) confident that tin mineralization is continuous between two known structures at the Mount Pleasant mine property in New Brunswick.

Adex is funding prefeasibility work, including drilling and metallurgical tests. The junior holds an option to acquire control of the mine from Piskahegan Resources, a private company. The property includes a 2,000-tonne-per-day mill with underground decline access to the tin and tungsten deposits.

Several well-documented mineralized zones are known to exist, including the Fire Tower (tungsten), the North (tin with significant tungsten and molybdenum) and the Saddle (tin).

Tin mineralization was also identified in a structure on the north side of the Fire Tower fault in the Fire Tower zone. This showing is referred to as the Fire Tower North zone.

The three tin-mineralized zones were initially believed to be separate structures which had been cut off by granite. Having completed the wildcat hole and re-evaluated the core, Adex believes the tin mineralization is continuous between the two structures.

The structure is now believed to be continuous for more than 1,600 metres between the Fire Tower North and the North zones, and a number of tin-mineralized cupolas may exist along that trend.

Adex projects that the current proven reserves of 5 million tonnes within this tin zone contain at least an additional 5 million tonnes of drill-indicated material — all at an equivalent grade of about 1% tin. Pilot plant processing of a 22-tonne bulk sample of tin mineralization will be undertaken at Lakefield Laboratories in March. In addition, bioleach testing of sulphide fines is under way in an attempt to achieve low-cost recovery of indium, bismuth, zinc, and copper.