The Tuktakamin showing is located 5 kilometres south-southwest of Falkland, on the summit of Tuktakamin Mountain.

In this area, Upper Triassic to Lower Jurassic Nicola Group sedimentary and volcanic rocks unconformably overlie Devonian to Triassic sedimentary and volcanic rocks of the Harper Ranch Group. These units are intruded by Middle Jurassic granitic rocks of the informally named Terrace Creek batholith. Extensive Eocene Kamloops Group volcanic and sedimentary rocks overlie the older units.

Kamloops Group volcanic rocks host volcanic glass. A breccia, about 100 metres thick, caps the top of the mountain. The breccia consists of fragments of black basaltic glass, from 1 centimetre to several metres across, surrounded by orange to light-brown palagonite.

Prospecting was carried out in 1980.