Tha Jackpot showing occurs in shist and gneiss of the Middle Cambrian to Middle Devonian Lardeau Group. Sill like intrusions of granite, possibly of Cretaceous age, intrude the schist near the showings. The veins are characterized by brecciated structure, cemented and partially replaced with quartz. Sulphide minerals are sparse and consist of galena, sphalerite and possibly some grey copper. The widths vary from several centimetres up to 60 centimetres. A tunnel was driven on the more northerly of two veins for about 45 to 60 metres. Other scattered mineralization is reported in the property area.