The Eureaka and Ora claims are located on the south side of Caribou Creek, approximately 12 kilometres east of Burton.

The main Eureaka showing comprises tectono-clasts or fragments of brecciated galena-bearing white vein quartz within a 3.5 metre thick graphitic shear zone. The graphitic schist is located at the contact between mafic volcanic rocks and clastic metasedimentary rocks (argillites and quartzites), both of which are part of the Triassic Slocan Group. Quartz monzonite of the Cretaceous Goat Canyon-Halifax Creek stock outcrops south of the area. Quartz-sulphide float carrying pyrite, pyrrhotite, sphalerite and galena reportedly assayed 1594.5 grams per tonne silver, 12.6 per cent lead, 3.9 per cent zinc and 4.8 grams per tonne gold (Assessment Report 8951).

The showings were explored in 1934 and 1935 by two short adits and an inclined shaft located at the 1310, 1360 and 1390 metre levels respectively. Between 1980 and 1983, R. Allen and Welcome North Mines Limited conducted prospecting and geological mapping, and collected more than 107 soil samples which were analysed for silver, lead and zinc.