The Gold King occurrence is located on the south side of Hall Creek, 11 kilometres south-southwest of Nelson. The occurrence is exposed in an old tunnel. Similar mineralization occurs to the north at the Independence showing (082FSW372).

The area is underlain by volcanic rocks of the Lower Jurassic Elise Formation (unit Je1, Open File 1989-11), Rossland Group which have been intruded by granite of the Middle to Late Jurassic Nelson Intrusions. The volcanics consists of dark green augite porphyry, porphyry flow breccias, agglomerates, minor crystalline tuffs and porphyry dykes.

Sheared quartz veins and stringers, from 0.01 to 1.5 metres wide and 2 to 50 metres long, strike 030 degrees and dip 80 degrees northwest. Vein emplacement appears to be controlled by two major trends (northwest and northeast) of joints, faults and shears. Pyrite is the major ore mineral with lesser amounts of pyrrhotite, chalcopyrite, bornite, tetrahedrite and free gold. Gangue minerals are usually quartz with minor carbonate, epidote and chlorite. Locally, the wall rocks may carry disseminated pyrite which also contain gold values. Pyrite is more abundant than pyrrhotite.

Select grab samples taken in 1984 from trench HTS14 containing up to 5 per cent by volume pyrite and chalcopyrite assayed up to 6.86 grams per tonne gold, 41.14 grams per tonne silver and 1.36 per cent copper (Assessment Report 12992).

A total of 7 tonnes of ore has been mined from the workings from 1931 to 1940 producing 341 grams of gold, 621 grams of silver and 51 kilograms of copper.