The Alcan Copper showing is situated about 1.6 kilometres northeast of Mile Post 450 on the Alaska Highway, 10 kilometres south-southeast of Muncho Lake (Property File - O'Grady, B.T. (1946): Summary report). This is an old showing, and its location is plotted approximately, based on a written description. No work is documented beyond trenching done in the mid-1940s.

Based on its location, the showing is hosted in fine-grained dolostone, sandy dolostone and limestone of the Upper Silurian to Lower Devonian Muncho-McConnell Formation (Geological Survey of Canada Memoir 373, Map 1343A). In this area, around the northern tip of the Muskwa Anticlinorium in the Northern Rocky Mountains, the rocks are deformed by moderate folds and thrusts (Geological Society of America, Geology of North America, Volume G-2, page 639). All rocks belong to Ancestral North America (Geological Survey of Canada Map 1713A).

The carbonate rocks on the property strike northwest and dip steeply northeast. They are intruded by dykes and sill-like basic intrusions up to 10 metres wide which are probably responsible for zones of silicification in the adjacent limestones. The silicified zones contain lenses and stringers of quartz which contain sporadic disseminated pyrite, chalcopyrite and malachite mineralization. One quartz lens 15 centimetres wide contains a band of massive sulphides 50 centimetres long. This material assayed 5.7 per cent copper (Property File - O'Grady, B.T. (1946): Summary report).