The Phoenix occurrence is considered Rossland-type mineraliza- tion, with sulphides infilling well-defined fractures and faults in the Lower Jurassic Rossland monzonite. The host rock is comprised of a biotite-hornblende-augite monzonite stock which is medium to fine- grained, grey to green in color. The monzonite hosts magnetite, apatite, some sphene with chlorite, epidote, pyrite and pyrrhotite.

The Phoenix vein strikes 080 degrees and dips near vertically, and ranges between 0.6 to 1.2 metres in width hosting 15 to 20 centimetres of gold and copper ore. Mineralization consists mainly of pyrite, pyrrhotite, and chalcopyrite with lenses of quartz and carbonate gangue.

The system was mined in 1912 to 1915 and from 1939 to 1942. A total of 279 tonnes of ore were mined from which was recovered 4,697 grams gold, 16,016 grams silver and 3,212 kilograms copper.