The Tas showing is located about 3.5 kilometres southwest of Willis Creek and 20 kilometres south-southeast of Princeton.

The area is underlain by the eastern facies of the Upper Triassic Nicola Group consisting of mafic augite and hornblende porphyritic pyroclastics and flows.

Finely disseminated chalcopyrite occurs in an outcrop of Nicola Group volcanics, near a lineament that may represent a fault. A sample of this mineralization assayed 0.07 per cent copper (Assessment Report 4806, page 6).

In 1972, Phelps Dodge completed a program of geological mapping, soil sampling and ground magnetometer and induced polarization surveys on the area as the Tas and Tat claims. During 1991 through 1994, G.F. Crooker completed programs of silt sampling, geological mapping and ground geophysical surveys on the area as the Tas 1-2 claims. In 1996, Moreleigh Minerals completed a program of geological mapping, soil and rock sampling and ground electromagnetic and magnetic surveys. In 2009 through 2011, Supreme Resources completed programs of geochemical sampling and a 19.5 kilometre induced polarization survey.