The Sax showing is located 2.5 kilometres north of the Double Ed (103P 025), near Granby Bay on Observatory Inlet and near the historical mining town of Anyox.

The region is underlain by a roof pendant, consisting of volcanic and sedimentary rocks, within the Eocene Coast Plutonic Complex. These rocks have been correlated with the Middle-Upper Jurassic Hazelton Group and the Middle Jurassic Bowser Lake Group. The volcanics consist of variably chloritized pillow and massive basalt with minor mafic tuffs. The overlying sediments consist of argillite, siltstone and sandstone with minor chert and limestone. There are two observable phases of folding in the area, an initial north-northeast trending phase followed by a later east-northeast trending phase.

Mineralization at the Sax showing consists of disseminated pyrite, pyrrhotite, chalcopyrite and sphalerite and occurs in chloritized pillow basalts, basaltic pyroclastics and minor pelitic to siliceous sediments. At the showing, over 1 per cent copper occurs in a 1 metre wide bed (Report by Taiga Consultants Ltd., 1992). Followup sampling in 1994 of stringer-type copper mineralization in the area returned values up to 5.5 per cent copper, 0.46 per cent zinc and 91 grams per tonne silver (Assessment Report 23582).