The Brooklyn occurrence is located on a ridge north east of Penny Creek and approximately 400 metres west of the Bedwell River.

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. Some lenses of recrystallized limestone also occur. 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 Intrusions. These plutonic rocks on Vancouver Island vary in composition from gabbro to quartz monzonite but are mainly granodiorite and quartz diorite.

Locally, a surface cut running at 030 degrees exposes a northward dipping fracture, as well as other fractures branching off that strike almost due east and dip southward at moderate angles. The fractures are filled with quartz which carries some pyrite and a little galena. The main vein is up to 10 centimetres in width near the central part of the exposure but is only about 1 centimetre wide at the north end. Branching veins swell to 20 centimetres near the southern end of the exposure. The host rock is reported to be a fine grained volcanic.

A sample taken from the main vein where it has a 9 centimetre width assayed 10.97 grams per tonne gold and a trace of silver. A sample taken from a branch vein where it has a 13 centimetre width contained 41.83 grams per tonne gold and a trace of 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.