The Shell No.1 occurrence is located at 1188 metres elevation on the southwestern slopes of Anarchist Mountain, 8 kilometres due east of Osoyoos, British Columbia.
The showing is underlain by metaquartzite, chlorite schist, quartz-biotite schist, black phyllite and greenstone of the Carboniferous to Permian Anarchist Group. These metasediments have been highly metamorphosed. Chlorite and sericite alteration are prevalent. Foliated hornblende granodiorite, granite, quartz monzonite and syenite of the Middle Jurassic Nelson intrusions have intruded these Anarchist rocks to the immediate southwest. The main foliation strikes 140 degrees and dips 70 degrees east. Some tight folds were observed.
An opencut has exposed a shear zone striking 330 degrees and dipping 60 degrees to the northeast. The shear zone is hosted in quartz-biotite-chlorite schist which in turn is intruded by a rhyolite dike. Mineralization in this shear zone consists of disseminated pyrite, sphalerite and chalcopyrite over at least 61 metres width. Greenstone is exposed immediately to the east and carry magnetite veinlets following the main foliation. The shear zone appears to terminate to the southwest against the Nelson intrusions.
Rock grab samples taken from this shear zone in 1971 yielded 0.05 per cent zinc, 0.06 to 0.08 per cent copper, trace to 0.2 per cent lead, 0.01 to 0.02 per cent nickel and trace silver and gold (Assessment Report 2926).
Work History
The Shell No.1 showing was first discovered at the turn of the century. Property exploration in 1971 by Fourbar Mines Ltd. discovered three old trenches and a caved adit. The property has recently been reinvestigated by Crownex Resources (Canada) Ltd. who own the Ket 18 Group of claims to the immediate east.
During 2008 through 2012, Grizzly Discoveries Inc. completed programs of geochemical (rock, stream sediment and soil) sampling, geological mapping and airborne and ground geophysical surveys on the Dayton-Sidley area of the Greenwood Property.