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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  30-Jun-97 by Keith J. Mountjoy(KJM)

Summary Help Help

NMI
Name GOLDEN CACHE, GOLDEN EAGLE (L.370), ALPHA BELL FR. (L.523), OMEGA FR. (L.522), AMPLE Mining Division Lillooet
BCGS Map 092J070
Status Past Producer NTS Map 092J09E
Latitude 50º 38' 30" N UTM 10 (NAD 83)
Longitude 122º 04' 55" W Northing 5610380
Easting 564914
Commodities Gold Deposit Types I01 : Au-quartz veins
Tectonic Belt Coast Crystalline Terrane Bridge River
Capsule Geology

The Golden Cache past producer is located on the north side of Cayoosh Creek, immediately west of the confluence of Phair Creek and is consisted to be the northern extension of the Bonanza occurrence (092JNE084). Lillooet, British Columbia lies 10 kilometres to the east.

The area of the Golden Cache deposit is underlain by Mississippian to Jurassic metasediments consisting of argillite, phyllite and schist of the Bridge River Complex. The dip is generally shallow to the east with local flat-lying structures. Tight recumbent folds and imbricate structures occur with strong graphitic shearing along fold limbs, occasionally intruded by narrow felsic dikes. Quartz veins are irregularly distributed and follow the local schistosity.

The Golden Cache adits (5 in all) follow flat-lying lenses up to 3 metres thick hosted in chlorite-talc schist striking northwest and dipping 17 degrees east. Scattered pyrite, arsenopyrite and native gold occur in both quartz and wallrock. Assays run up to 7.2 grams gold per tonne gold (Assessment Report 12571).

Some old workings were relocated at about 762 metres elevation near the eastern boundary of the Omega Fraction (Lot 522) claim. The workings exposed an irregular quartz vein averaging 1 metre width. The veins contains abundant arsenopyrite and native gold. The quartz vein follows bedding in argillite, which dips 18 degrees north.

Between 1897 and 1901, the mine produced 2788 tonnes of ore averaging 8.12 grams of gold per tonne for a total recovery of 23 kilograms of gold (Assessment Report 12571). There has been some confusion in past records between the Golden Cache and the Ample (092JNE069). Production figures are listed for the Golden Cache, although they have been previously listed under the Ample; there may have been an adit named the Ample in the Golden Cache group.

Bibliography
EM EXPL 1999-33-39
EMPR AR 1896-547; 1897-554; 1910-134; 1929-235; 1930-202; 1932-211;  1933-262; *1935-F6; 1968-162
EMPR ASS RPT 11871, *12571, 14146, 14878, 22154, 23274, *23945
EMPR BC METAL MM00241
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 INDEX 3-187
EMPR OF 1987-11; 1988-3; 1989-4; 1990-10
EMPR PF (McLeod, A. (1934): Reports and Maps; Humphrys, N. (1934):  Reports and Maps; Schofield, S.J. (1934): Reports and Maps;  O'Grady, B.T. (1935): Reports and Maps; Smith, E.W. (1977):  Reports and Maps)
GSC OF 482
GSC P 73-17

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