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File Created: 03-Mar-1987 by Mary McLean (MM)
Last Edit:  11-Sep-1991 by Mary McLean (MM)

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NMI
Name KELVIN, ALMA, ROAD, OLYMPIC Mining Division Lillooet
BCGS Map 092J087
Status Prospect NTS Map 092J15W
Latitude 050º 53' 25'' UTM 10 (NAD 83)
Longitude 122º 45' 10'' Northing 5637653
Easting 517388
Commodities Gold, Silver, Copper, Zinc Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Bridge River
Capsule Geology

Black graphitic schist and cherty argillites and andesites of the Mississippian to Jurassic Bridge River Complex (Group) are cut by felsic dykes and dyke-like serpentinized ultramafic bodies. The dykes are steeply dipping northeast and trend northwest.

Three pre-1936 Kelvin adits explored chalcopyrite, pyrite, arsenopyrite and sphalerite-bearing quartz stringers along a shear contact between the andesite/argillite package and an altered felsic dyke. A grab sample of the graphitic schist assayed 22.5 grams gold per tonne and 48.3 grams silver per tonne (Assessment Report 14344).

The Road zone, approximately 550 metres west-northwest of the Kelvin zone, is hosted at the same dyke contact. The shear zone here is 3 to 4 metres wide and bleached with chloritic, sericitic and pyritic alteration. The best assays ran 5.8 grams gold per tonne, 0.83 per cent arsenic and 0.035 per cent antimony.

The Alma showing (one adit and pits) is about 500 metres west of the Kelvin zone. It consists of a quartz-carbonate altered zone hosted in andesite and contains pyrrhotite, chalcopyrite and sphalerite. Gold values grade from 0.28 to 0.36 grams per tonne.

All three occurrences are presently grouped with the adjoining Olympic property (see 092JNE107, 092JNE092 and 092JNE086).

Bibliography
EMPR ASS RPT 8293, 8954, 11139, 12607, *14344
EMPR FIELDWORK 1974, p. 35; 1985, pp. 303-310; 1986, pp. 23-29; 1987, pp. 93-130; 1988, pp. 105-152; 1989, pp. 45-72; 1990, pp. 75-83
EMPR GEOLOGY 1975-G58
EMPR OF 1987-11; 1988-3; 1989-4; 1990-10
EMPR PF (*Special Report for the Minister of Mines Annual Report 1936, Part F, by B.T. O'Grady; Geology around the Alma adit, 1987)
GSC MAP 430A; 137-431A
GSC MEM 130; 213
GSC OF 482
GSC P *43-15; 73-17
CJES 1987, Vol. 24, pp. 2279-2291
GCNL #243, 1985; #53, 1986
Sebert, C.F.B. (1987): Description of 22 Mineral Properties, Bridge River Mining Camp, Unpublished B.Sc Thesis, University of British Columbia

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