The main showing is associated with a zone of silicification along a fracture at 085 degrees/ 80 degrees south in massive, blocky- fracturing tuffs and breccias of the Jurassic Hazelton Group. The mineralization consists of arsenopyrite and minor amounts of pyrite, sphalerite and chalcopyrite over widths up to about 36 centimetres. Other fractures also carry pyrite and/or arsenopyrite. Sampling indicates that the arsenopyrite mineralization is auriferous.