The RO occurrence is in the Friendly Lake area, about 25 kilometres west of Little Fort. Mineralization at the Ro showing comprises disseminated galena, pyrite, chalcopyrite and molybdenite in fine-grained andesitic rock (microdiorite?) of the Upper Triassic Nicola Group, that is strongly altered to bluish antigorite, pyroxene, chlorite and calcite (Geology, Exploration and Mining in British Columbia 1970). Similar mineralization and alteration occurs to the east, near the eastern margin of the Triassic to Jurassic Friendly Lake Intrusive Complex, and to the northwest, between two monzonite stocks (Assessment Report 15221).
Exploration in the Friendly Lake area was initiated as a result of a regional geochemical survey carried out by Anaconda American Brass Limited during the summer of 1965. Anaconda commenced staking a large block of ground north of Friendly Lake based on anomalous results of the stream sediment survey, and prospecting led to the discovery of numerous showings, including the RO and FL (092P 134) showings. The Saskatchewan Mining Development Corporation (SMDC) optioned the claims in 1982 and carried out further geological, geochemical and geophysical work on them. Lornex drilled ten percussion-drill holes on the RO claims in 1983. Electrum Resource Corporation conducted exploration in 1994 to 1996. Midland Exploration Corporation continued work in 1997. The B.C. Geological Survey conducted a regional drift exploration program over NTS Mapsheets 092P08W and 09W in 1999 (Open File 2000-17).
The Ro occurrence was held as part of the Friendly Lake property of Electrum Resources in 2003 and subsequently optioned to Lithic Resouces Ltd. who worked on the large property in 2004. The property was returned to Electrum in January 2005. See FL (092P 134) for further details.