The Seattle occurrence is located on or near Penny Creek, approximately 1 kilometre north west of the creek mouth.

The area is underlain mainly by volcanics of the Upper Triassic Karmutsen Formation, Vancouver Group. In the Bedwell River area these consist of fine-grained andesites and black or dark green basalts. Lenses of recrystallized limestone also occur locally. Large areas to the immediate west of the head of Bedwell Sound and a few kilometres to the north are underlain by rock of the Early to Middle Jurassic Island Plutonic Suite. These plutonic rocks on vary in composition from gabbro to quartz monzonite but are mainly granodiorite and quartz diorite.

The occurrence is underlain by volcanics and recrystallized limestone which lie south of a tongue of Island Intrusion rock. Aplite and quartz diorite dykes, associated with the intrusive, are found in the volcanic rocks.

The old workings, from the early part of the century, examined skarn mineralization consisting of garnet, epidote, magnetite, pyrite, and chalcopyrite that has replaced limestone and probably some volcanic rock. One exposures is about 2.4 metres wide and rich in chalcopyrite. The workings consist of two adits, a shaft and some surface cuts. A sample of recrystallized limestone from a 1.5 metre surface cut made in 1939 contained magnetite, pyrite, chalcopyrite and some sphalerite. The sample assayed 3.43 grams per tonne gold and 3.43 grams per tonne silver (Bulletin 8).

In 1970 and 1971, W. Guppy completed programs of soil sampling and geological mapping on the area as the Tie and Braw claims. In 1988, Intercontinental Ventures completed a program of geochemical sampling, geological mapping and a ground electromagnetic survey on the area as the Prosper property. In 1991, Golden Hinde Mines completed a program of soils sampling and ground magnetic and electromagnetic surveys.