The Tas North (T-1) occurrence is located on the east side of Wolfe Creek, at an elevation of approximately 1360 metres.

The area is underlain by the eastern facies of the Upper Triassic Nicola Group consisting of mafic augite and hornblende porphyritic pyroclastics and flows. These have been intruded by dioritic rocks of the Late Triassic to Early Jurassic Copper Mountain Stock.

Locally, an area of former trenches and shallow shafts exposes a 0.5 metre wide zone of fractured monzonite. Mineralization consists of pyrite and chalcopyrite with epidote, K-spar and magnetite occurring along fractures and as fracture controlled disseminations. Anomalous copper values are reported over an area of 25 by 30 metres in the monzonite (Assessment Report 33062).

In 1996, a grab sample (I-223) assayed 4.2 grams per tonne silver and 0.398 per cent copper (Assessment Report 25102).

In 2009, chip sampling averaged values of 0.113 per cent copper over 11 metres from north to south and 0.081 per cent copper over 10 metres from east to west. Select grab samples assayed up to 0.41 per cent copper and 4.6 grams per tonne silver (Assessment Report 31363).

In 2010, chip samples from trench T-1 yielded an average of 0.13 per cent copper and 1.7 grams per tonne silver over 12 metres (Assessment Report 33062).

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.