The Rush occurrence is located about 236 kilometres east-southeast of the community of Dease Lake.
The Rush 1-6 claims are largely underlain by Upper Cretaceous-Tertiary sediments of the Sifton Formation. One significant showing consisting of a quartz stringer with an average width of 0.2 metre was discovered in 1989. This showing was named the "Nod Vein" by Equity Engineering Ltd. and is associated with a diorite intrusion. The Nod quartz stringer zone was traced for 2 kilometres along strike and varies from a single vein averaging 20 centimetres width, to three veins 5 to 20 centimetres width. The greatest width observed was 1.5 metres over a 20 metre strike length. This vein is the "Nod Vein" from a 1990 report by Equity Engineering Ltd. The vein dips moderately to steeply north and strikes southeasterly with a dextral offset of a few hundred metres at both of the north-south faults which Post Creek and Glacier Creek follow. The vein is erratically mineralized with chalcopyrite, galena, and pyrite. Values up to 252 grams per tonne silver and 39.9 grams per tonne gold were obtained over narrow widths (Assessment Report 21034).
In 1961, the southern section of the Rush claims was staked by Southwest Potash Corporation as the Sam group of 80 claims. Work conducted over this claim group included geological mapping, geochemical sampling, airborne magnetometer surveying and 937 metres of diamond drilling in three AX-size drillholes. Traces of molybdenite were reported in all holes. The area was restaked in 1968 as the Ang 1-112 claims by Coronet Mines Ltd. who conducted an airborne magnetometer survey and probably drilled two holes in 1969 totalling 896.5 metres.
In 1988, Continental Gold Corporation staked the Rush 1-4 claims and carried out 12 person-days of prospecting, collecting 83 rock and 11 silt samples. In 1989, a more detailed prospecting effort was carried out by Equity Engineering Ltd. for Candela Resources Ltd. One significant showing consisting of a quartz stringer with an average width of 0.2 metre was discovered. This showing was named the "Nod Vein" by Equity. In 1990, Candela Resources Ltd. conducted detailed stream sediment sampling, and prospecting in areas not covered by Equity. A total of 21 heavy mineral samples, 13 silt samples, and 115 rock samples were taken. Particular attention was paid to the "Nod Vein" with 34 rock samples, mostly chip samples, taken from the vein and its wallrock.
