The Pickston showing is located near the contact area of Lower Permian limestone of the Stikine Assemblage with argillite and wacke of the Upper Triassic Stuhini Group

The Pickston Zone consists of a series of silicious sulphide-rich pods and quartz-sulphide veins within a gossanous thrust fault. Individual veins and pods are up to 20 centimetres wide and ten metres long, with up to 50 per cent pyrite, 30 per cent pyrrhotite, 20 per cent galena, 5 per cent chalcopyrite, minor bornite and traces of sphalerite. Gold contents are generally very low, with a maximum of 0.51 gram per tonne (Assessment Report 20812).

See the Saddle occurrence (104G 276) to the immediate southwest for details of a common work history.