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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  12-Jan-2004 by Robert H. Pinsent (RHP)

Summary Help Help

NMI
Name DAVEY (L.2452), DAVIE, COON, CHEYENNE Mining Division Revelstoke
BCGS Map 082K064
Status Prospect NTS Map 082K11W
Latitude 050º 39' 42'' UTM 11 (NAD 83)
Longitude 117º 23' 22'' Northing 5612274
Easting 472475
Commodities Lead Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Kootenay
Capsule Geology

The Davey veins straddle Lardeau Creek approximately 500 metres downstream from the mouth of Cup Creek. The Davey claim (L.2452) covers the road bridge across Lardeau Creek. It is part of a cluster that originally included the Cheyenne, Coon, "Davie", Jubilee, Crescent claims and Glencoe and Daisy fractions. The Coon was uphill to the northeast of the Davey, and the Cheyenne was uphill and to the northeast of the Coon. The veins in the area were discovered in the late 1890s and exposed in open cuts and short adits by 1898.

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 Davey and associated claims are underlain by undifferentiated Lardeau Group strata on strike midway between the Nettie L. [082KNW100] and Silver Cup [082KNW027] deposits. They are folded, faulted and locally highly phyllitic.

There are three quartz veins on the Cheyenne claim. The south vein is 2.4 metres wide and open on strike. It has 0.15 metre of galena ore on its hanging wall and is cut by several small stringers of galena. There is a short adit on the centre vein, which shows a little galena mixed with quartz. The Coon claim has two veins that have been traced for several tens of metres. A crosscut taps the main vein at a depth of 7 metres. At this point, it is 1.8 metres wide and carries about 0.08 metre of solid galena in its hanging wall. An open cut on the south vein exposes a large body of quartz that contains specks and small seams of galena. The Davey vein was exposed by an open cut and a 10.6 metres long tunnel. There is a small amount of mineralization on its hanging wall.

Bibliography
EMPR AR *1898-1073
EMPR BULL 45 p. 87
EMPR OF 1990-24
GSC MEM 161

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