The historic King William camp is located on Mineral Hill within a north trending belt of Upper Triassic intermediate volcanics, volcaniclastics and sediments belonging to the Nicola Group. These greenstones consist of massive, chlorite-epidote altered andesite and basalt, augite porphyry, andesitic flow breccia and tuff, minor interbedded argillite, conglomerate and limestone. Attitudes of tuff horizons and sedimentary bedding suggest that a north plunging axis of a syncline passes through Mineral Hill. Both west and north- east of Stump Lake, the Nicola Group volcanics are intruded by Lower Jurassic granitic batholiths; scattered granodiorite outcrops have been mapped in the vicinity of the camp. Secondary to the north- northeast trending Quilchena and Stump Lake regional faults are numerous smaller faults which form a complex fracture pattern and appear to control alteration and mineralization. Andesitic rocks are bleached, pervasively silicified, pyritic and brecciated. Mineralization occurs in numerous quartz, and less commonly calcite veins which strike generally to the north and dip steeply eastward.

The Emulator showing consists of an adit and several open cuts which expose a sparsely mineralized quartz vein (2 metres wide) striking 335 degrees and dipping 75 degrees east. Diamond-drill holes intersected veins 10 to 80 centimetres in width carrying pyrite and galena and minor blebs of sphalerite and chalcopyrite. One of these assayed 10.21 grams per tonne gold, 219.39 grams per tonne silver, 0.62 per cent lead and 0.35 per cent zinc over 80 centimetres (Assessment Report 13152). The wallrock is grey altered andesitic rock with up to 5 per cent finely disseminated pyrite and occasional blebs of grey sulphides. This material returned values of 1.1 grams per tonne gold and 7.8 grams per tonne silver. Trenching exposed similar mineralization within the altered andesitic unit.