The Jack S1 showing is located on the west side of the Sand River, approximately 2.5 kilometres north of the river mouth.

The area is underlain by tuffaceous rocks and minor chert of the Upper Triassic Karmutsen Formation (Vancouver Group) and is cut by a north trending fault.

Lenses of massive pyrite, pyrrhotite, and chalcopyrite up to 60 centimetres wide and a few metres long are exposed for a length of approximately fifty metres along a road. A sample (B-11) of massive sulphide material assayed 2.45 per cent copper, 47.1 grams per tonne silver and 0.17 grams per tonne gold with other samples yielding up to 0.725 per cent molybdenum (Assessment Report 11621).

In 1982 through 1984, E. Specogna completed programs of prospecting, a ground VLF magnetic survey and a 10 metres “winkie” drill hole on the area as the Jack S1 claim. Drilling intersected massive and disseminated iron and copper sulphides and garnet throughout its length. The last 60 centimetres of core was composed primarily of massive magnetite.