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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  08-Apr-91 by Dorthe E. Jakobsen(DEJ)

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NMI
Name RACHEL, RACHEL 5-6, GRASSY MOUNTAIN, DONNA ROSE Mining Division Nelson
BCGS Map 082F023
Status Past Producer NTS Map 082F06W
Latitude 49º 17' 34" N UTM 11 (NAD 83)
Longitude 117º 27' 30" W Northing 5460104
Easting 466673
Commodities Gold, Silver, Lead Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Quesnel, Plutonic Rocks
Capsule Geology

The Rachel showing is located 22 kilometres southwest of Nelson. The area has been extensively explored since the 1800's; this vein was discovered in 1954.

The area is underlain by a granodiorite pluton, the Bonnington pluton, of the Lower to Middle Jurassic Nelson Intrusions. The granodiorite is locally cut by aplite and lamprophyre dykes and quartz veins 0.5 to 3.0 centimetres wide generally trending north and dipping steeply. The granodiorite exhibits two sets of jointing.

The Rachel vein is a north-northeast striking "saddle" vein exposed in an adit on the south side of Grassy Mountain. The vein is 10 to 40 centimetres wide over a strike length of 25 metres and follows the 2 sets of joints to their junction. The vein comprises quartz with lenses and disseminations of galena, free gold as flakes and traces of pyrite. A zone of argillic alteration occurs adjacent to the south side of the vein, and some chloritization and sericitization occur in the wallrock.

In 1980, Kimberley Gold Mines removed 14 tonnes of high grade ore from the adit, yielding an average assay of 66.64 grams per tonne gold, 271.5 grams per tonne silver, and 9.42 per cent lead (Assessment Report 19021). A grab sample taken in 1989 from the middle of the adit assayed 174.5 grams per tonne gold, 331.5 grams per tonne silver and 10.05 per cent lead (Assessment Report 19021).

An extension of the west limb of the vein is exposed 15 metres to the west of the adit. A grab sample taken in 1984 assayed 4.94 grams per tonne gold, 65.13 grams per tonne silver, 2.42 per cent lead (Assessment Report 19021).

Bibliography
EMPR ASS RPT 10088, 17172, *19021, 24507
EMPR BC METAL MM01055
EMPR BULL 41; 109
EMPR FIELDWORK 1980, pp. 149-158; 1981, pp. 28-32, pp. 176-186; 1987,  pp. 19-30; 1988, pp. 33-43; 1989, pp. 247-249; 1990, pp. 291-300
EMPR IR 1984-2, p. 101
EMPR MAP 7685G; RGS 1977; 8480G
EMPR OF 1988-1; *1989-11; 1991-16; 1994-8
GSC MAP 52-13A; 1090A; 1144A; 1571A
GSC MEM 94; 308; 191
GSC OF 1195
GSC P 52-13

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