The Tad 3 East occurrence is located 25 kilometres northwest of Kelowna, west of Whiterocks Mountain.

In this area, Devonian to Triassic Harper Ranch Group argillaceous rocks, basalt tuffs and flows, and minor rhyolite and limestone are intruded, in places by Middle Jurassic ultramafic/monzonite and calc-alkaline complexes of the informally named Terrace Creek Batholith. The diverse alkaline ultramafic/monzonite complex comprises hornblende, gabbro, quartz monzonite, mafic monzonite, porphyritic monzonite, biotite pyroxenite and hornblende pyroxenite.

Locally, three areas of hornblende pyroxenite and biotite pyroxenite plugs and dikes are reported to host traces of disseminated pyrite, magnetite and chalcopyrite, associated with epidote alteration.

In 1980, a sample (O-77-280) assayed 0.140 per cent copper and 0.10 gram per tonne platinum over 2 metres (Assessment Report 8456).

During 1977 through 1980, Cominco Ltd. carried out geological mapping, magnetometer surveying and drill programs on the area. During 1988 through 1990, Chevron Canada Resources completed programs of prospecting, geological mapping and geochemical sampling. During 1997 through 2003, Verdstone Gold Corporation and Molycor Gold Corporation examined the area.