The Powley occurrence consists of low-grade, skarn-hosted copper, zinc and silver mineralization. It is located in mountainous terrain in the Powley Creek area, 30 kilometres north of Wakeman Sound of Kingcome Inlet.

The area is part of the Jurassic to Tertiary Coast Plutonic Complex, and is underlain by a body of quartz diorite (Geological Survey of Canada Map 1386A). This unit probably includes metasedimentary rocks because bodies of limestone and skarn have been mapped in the Powley Creek area, mostly on the Powley 1 and 3 claims (Assessment Report 10522). These bodies, at least 7 in number, are similar and widely spaced. They are 1 to 6 metres in width and 1 to 20 metres in length, and usually trend west-northwest, or rarely north. The limestone or skarn contains one or more veins of mineralization, each up to 0.5 metre wide; the surrounding "granite" may also be mineralized locally.

There is very little information on the mineralization (Assessment Report 10522). Quartz, hornblende and pockets of garnet are associated with the skarn alteration. Copper, zinc, molybdenum, silver and cobalt mineralization is present but the minerals are not specified.

Spectrochemical analysis on selected chip samples of limestone or skarn yielded between 0.03 and 0.35 per cent copper, and up to 0.11 per cent zinc (Assessment Report 10522). The best silver assay obtained was 9.6 grams per tonne, from site 4 on the Powley 2 claim in the extreme east of the property (Assessment Report 10522).