The Oksarah occurrence is located approximately 17.8 kilometres south-southwest from the King Salmon Lake.

A set of subparallel veins are foliated to varying degrees within greenstone that displays rare relict pillows. Most continuous of these is a chalcopyrite vein, 15 to 70 centimetres wide, that can be traced for about 75 metres. A set of magnetite-chalcopyrite veins up to 20 centimetres wide is oriented roughly orthogonal to the main chalcopyrite vein set. Assays from the widest veins of these two sets are, respectively: 6.4 and 0.6 per cent copper, 279 and 10 grams per tonne silver (Fieldwork 1994, Table 3, samples MM1 94-23.021 and 022). Vuggy, quartz-flooded breccia zones up to 10 metres wide and traceable for several hundreds of metres are spatially associated with the copper-silver mineralization, but do not have elevated metal contents.

Widespread deformation and metamorphism have obscured primary textures, and the source of mineralization is uncertain. A hydrothermal origin is possible, but quartz carbonate or other gangue minerals are scarce. A volcanogenic origin is supported by the submarine setting of the hostrocks (as indicated by relict pillows), but sulphides occur as veins both within and cutting fabrics that are interpreted to be much younger than the hostrocks.

The showing was discovered in 1994 by members of the British Columbia Geological Survey during a regional mapping program.