The Sunrise showing occurs in Permian to Jurassic Hozameen Complex rocks. Workings from the 1930s consist of four opencuts, mainly in white, soft decomposed rock cut by irregular quartz lenses and stringers. Microscopic study of the decomposed rock indicated that it was probably a silicified limestone. A fine-grained diorite was observed in the westernmost cut.

The rocks in all opencuts are pyritic and one of the cuts in the decomposed rock exhibited abundant chlorite and a little sphalerite and galena. A 1.5-metre channel sample of this material yielded 0.69 gram per tonne and 13.71 grams per tonne silver (Minister of Mines Annual Report 1938, page F14). The same source records a second sample across 38 centimetres of 0.69 gram per tonne gold, 6.86 grams per tonne silver, 3.8 per cent zinc and nil lead.