Detailed information on the Bonanza vein system is limited. A mineralized vein strikes about 80 degrees and crosscuts quartzites of the Lower Cambrian Quartzite Range Formation near the westerly contact with the Lower Cambrian Reno Formation (both formations are correlative with rocks of the Hamill Group). The quartzite is hard, white and the vein bifurcates with some brecciation between the branches but mostly on the northerly branch. Visible gold is re- ported in the quartz vein which may be over a metre wide locally but has very scarce disseminated sulphides. Minor limonite is reported. Refer to the Queen mine (082FSW048) for a description of the Sheep Creek mining camp.

The Bonanza North and South veins are developed by four adits on the Dip claim. About 17 tonnes were shipped in 1910 but the value of the shipment was not reported (Minister of Mines Annual Report 1910, page 110). In 1963, a total of 14 tonnes were mined, from which 124 grams of gold, 2,861 grams of silver and 118 kilograms of lead were recovered.

Results of 1982 sampling indicate that there is an ore shoot above and below the second level on the North vein. Potential is indicated at depth where the productive horizon is projected to below an elevation of 914 metres. In 1983, 2720 tonnes of proven and possible ore at a grade of 18.86 grams per tonne gold was outlined on the North Bonanza vein (Assessment Report 11249). A later estimate of the ore on the property was reported to be 14,254 tonnes grading 10.28 grams per tonne gold (George Cross News Letter No.217 (November 12), 1987).