The Paterson Lake showing is located immediately west of Patterson Lake, approximately 19 kilometres north west of Port Alberni.

This area is underlain by Upper Triassic Karmutsen Formation volcanics of the Vancouver Group. The rock is a massive dark green basalt with occasional chlorite and epidote filled amygdules.

The two short adits occur along a major east-west linear trend (occupied by a creek) east of Mud Lake. Tuffaceous basalt is sheared, brecciated and silicified along a strike of 255 degrees and dip of 53 degrees north. A 1.5 metre wide quartz veins occurs in a heavily chloritized shear zone with associated limonite, azurite, malachite, chalcopyrite and bornite. In 1987, a sample of this material assayed 5.91 per cent copper, 0.44 gram per tonne gold and 12.8 grams per tonne silver (Assessment Report 16239).

A fractured zone occurs on the south side of the creek, opposite the adits, in a tuffaceous basalt. Quartz veins, 0.4 to 0.5 metres wide, host chalcopyrite and bornite mineralization. In 1987, four samples assayed from 0.076 to 1.69 per cent copper (Assessment Report 16239).

In 1985, sampling of an exposure of amygdaloidal basalt with chalcopyrite and bornite adjacent to a Tertiary(?) feldspar porphyry dike returned up to 5500 parts per billion gold, 36.9 parts per million silver and 81,000 parts per million copper (EMPR Property File - Lefebure, D.V. (1986-02-05): Evaluation of Patterson Lake property).

In the 1950's, two adits were completed on the showing. In 1986, Corporation Falconbridge Copper geologists conducted a one day property examination on the claims. In 1987, Dellaterra Resources Ltd. optioned the claims and completed a program of geological mapping, geochemical analyses of stream sediments, soils and rock, and geophysical testing by magnetometer, VLF-EM and Induced Polarization. In In 1989 and 1991, S.T.S. Resources completed programs of detailed mapping, hand trenching and four diamond drill holes, totalling 170.0 metres, to test the mineralized zone exposed in the two adits. In 2012, a program of prospecting and rock sampling was completed on the area as the Old Joe property.