The Jewell prospect is at 2225 metres elevation on the crest of Silver Cup Ridge, approximately 3.2 kilometres southeast of the Alpine [082KNW214]. Its location is uncertain, but it is most likely at the head of Ottawa Creek, which flows in a northeasterly direction into Lardeau Creek.
The Jewell vein has been developed by means of surface cuts and shafts for a strike length of approximately 100 metres. The property was owned by Mrs. Jowett in the 1920s, and by Ainsworth Mines Limited in the 1930s. The tenure was one of several crown granted claims enveloped by the Bug 2 and Bug 6-9 claims, owned by Golden Rule Resources Limited, in 1980. The Jewell and neighbouring Hercules [082KNW104] prospects were explored by Loumic Resources Limited in 1989.
The Trout Lake area is underlain by a thick succession of sedimentary and volcanic rocks of the Badshot Formation and Lardeau Group near the northern end of the Kootenay arc, an arcuate, north to northwest trending belt of Paleozoic and Mesozoic strata that is now classified as a distinct, pericratonic, terrane. The arc rocks are bordered by Precambrian quartzite in the east and they young to the west, where they are bounded by Jurassic-age intrusive complexes. They were deformed during the Antler orogeny in Devonian-Mississippian time and were refolded and faulted during the Columbian orogeny, in the Middle Jurassic. A large panel, the "Selkirk allochthon", was later offset to the northeast by dip-slip motion along the Columbia River Fault.
The Badshot Formation is composed of a thick Cambrian limestone that is a distinctive marker horizon in the Trout Lake area. It is underlain by Hamill Group quartzite, and it is overlain by a younger assemblage of limestone, calcareous, graphitic and siliceous argillite and siltstone, sandstone, quartzite and conglomerate, and also mafic volcanic flows, tuffs and breccias, all of which belong to the Lardeau Group. The rocks are isoclinally folded and intensely deformed, but only weakly metamorphosed. They occur as intercalated beds of marble, quartzite and grey, green and black phyllite and schist. Fyles and Eastwood (EMPR BULL 45) subdivided the group into six formations (Index, Triune, Ajax, Sharon Creek, Jowett and Broadview) of which the lowermost (Index) and uppermost (Broadview) are the most widespread. The Triune (siliceous argillite), Ajax (quartzite) and Sharon Creek (siliceous argillite) are restricted to the Trout Lake area. The Jowett is a mafic volcanic unit.
The Jewell claim is not well located, but is most likely underlain by green, gritty metasandstones and phyllites of the Broadview Formation. The rocks are folded and deformed and display the northwest strike and moderate to steep northeast dip that is common throughout the Lardeau Group on Silver Cup Ridge. The Jewell vein is discordant to stratigraphy and schistocity. It strikes 055 and dips at 70 degrees to the northwest. It is 0.76 to 1.22 metres wide, has sharp contacts and contains quartz, galena, pyrite and a little sphalerite. The vein has been developed by means of surface cuts and shafts for a strike length of approximately 100 metres. An average sample taken across the vein in the bottom of one of the shafts in 1914 assayed 4.11 grams per tonne gold and 65.1 grams per tonne silver over 0.76 metre. A "selected" sample of solid galena collected at the same time assayed 2.06 grams per tonne gold, 1851 grams per tonne silver and 78.3 per cent lead.
