The region is underlain by (?)Hadrynian to Paleozoic Snowshoe Group rocks. The Snowshoe Group is an assemblage of dominantly metasedimentary rocks within the Barkerville Terrane of south central British Columbia. The metasedimentary rocks consist primarily of marble, quartzite and phyllite. In the Yanks Peak area these rocks comprise the Keithley and Harveys Ridge successions, but further to the east they remain undifferentiated. Metamorphism of the region varies from chlorite to sillimanite and higher grade. Gold-bearing quartz veins occur only in greenschist facies rocks.

The Holmes Ledge showing consists of quartz lenses and veins containing sparsely distributed galena, sphalerite, chalcopyrite, pyrite and pyrrhotite. The veins and lenses are hosted by dark grey argillaceous quartzite. A thin vein (up to 20 centimetres wide) contains scattered patches of scheelite. An adit and a small opencut were constructed to further explore the veins. There is no recorded production from the showing.

In 1940, a 5 centimetre grab sample from the vein containing scheelite assayed 20.50 per cent tungsten (Property File - Stevenson, J.S., 1940). A selected sample by Holland in 1954 from a 10.5 metre opencut assayed 0.34 gram per tonne gold, 215.96 grams per tonne silver and 6.7 per cent lead, and a new showing that covers the same ground as the Holmes Ledge, known as the Fat Vein (093A 177), assayed 2.05 grams per tonne gold, 111.41 grams per tonne silver and 1.1 per cent lead from a chip sample taken over 2.5 metres (Property File - Sukuma Explorations Ltd. Prospectus July, 1988).

On the Aster property, numerous pits, trenches and drifts attest to the high level of previous exploration activity within the general area, but with the exception of a number of early reports, little record exists of the previous exploration. The Aster 1-6 claims were staked in 1987 by V. Guinet as agent for Golden Eye Minerals Ltd. The property was optioned to Sukuma Explorations Ltd. in September 1987 with an initial exploration program consisting of grid establishment (34 kilometres), 20 kilometres of VLF-EM, 1189 soil samples, 78 rock samples, prospecting and geological mapping. In 1988, a field program consisted of 30 kilometres of grid establishment and 1311 soil and 134 rock samples collected. A total of 500 metres of trenching was also completed in 23 trenches with about 500 metres of road constructed to provide access. The 1991 exploration program consisted of 644 soil, 13 silt and 20 rock samples collected.