The Fish Creek occurrence is located on the ridge between Skookum and Fish creeks, 1 kilometre north-northeast from the summit of Mountain View, 7 kilometres north-northwest of Stewart.
The area is underlain by Early Jurassic Texas Creek Plutonic Suite granodiorite in contact with north trending Lower Jurassic Hazelton Group greenstone, tuff, tuffaceous greywacke and argillite. Quartz veins occur predominantly in the granodiorite but in part cross the contact and are evident to a minor extent in Hazelton Group rocks. Two types of mineralization occur; the first are predominant quartz veins with galena, sphalerite, pyrite, tetrahedrite, chalcopyrite, microscopic freibergite and sparse scheelite; the second are lenticular bodies of pyrrhotite with minor amounts of chalcopyrite, pyrite and arsenopyrite. Scheelite occurs as scattered crystals in the quartz veins and locally are 2.5 centimetres across.
There are approximately four parallel quartz veins lying just at the contact between granodiorite and Hazelton Group rocks but almost wholly within the granodiorite. The veins occur within a distance of 609 metres of each other. The veins strike from 310 to 320 degrees and dip between 45 to 70 degrees northeast. Vein widths vary from 0.48 to 1.21 metres and locally break up into a number of narrow quartz stringers which sometime extend into the wallrock. The veins carry local shoots of sulphides 7 to 30 centimetres wide and are lean for considerable lengths. A local fault striking 030 degrees with a vertical dip locally cuts off a vein at the contact of granodiorite and Hazelton Group rocks. A quartz vein up to 38 centimetres wide strikes 290 degrees and dips 45 degrees north in greenstone which is cut by a quartz diorite dike. Numerous quartz stringer veins occur in the footwall and are up to 60 centimetres wide. Mineralization consists of galena with minor chalcopyrite, sphalerite and tetrahedrite.
Seven adits and drifts have developed the quartz veins. Eighteen tonnes of sorted ore taken from veins on the Olympia claim assayed 12.68 grams per tonne gold, 10,832.48 grams per tonne silver, 32.2 per cent lead and 7.68 per cent copper (United States Geological Survey Bulletin 807).
