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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  20-Jun-2020 by Karl A. Flower (KAF)

Summary Help Help

NMI 092I8 Ag1
Name TUBAL CAIN (L.586), ENTERPRISE Mining Division Kamloops, Nicola
BCGS Map 092I039
Status Prospect NTS Map 092I08W
Latitude 050º 20' 50'' UTM 10 (NAD 83)
Longitude 120º 23' 12'' Northing 5580503
Easting 685926
Commodities Lead, Zinc, Copper Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The historic Enterprise camp is located on Mineral Hill, approximately 5.5 kilometres south of the community of Stump Lake. The Tubal Cain occurrence is located immediately east of the Enterprise Mine (MINFILE 092ISE028) and a complete exploration history can be found there.

The camp is hosted within a north trending belt of Upper Triassic intermediate volcanics, volcaniclastics and sediments belonging to the Nicola Group. These greenstones consist of massive, chlorite-epidote altered andesite and basalt, augite porphyry, andesitic flow breccia and tuff, minor interbedded argillite, conglomerate and limestone. Attitudes of tuff horizons and sedimentary bedding suggest that a north plunging axis of a syncline passes through Mineral Hill. Both west and north- east of Stump Lake, the Nicola Group volcanics are intruded by Lower Jurassic granitic batholiths; scattered granodiorite outcrops have been mapped in the vicinity of the camp. Secondary to the north- northeast trending Quilchena and Stump Lake regional faults are numerous smaller faults which form a complex fracture pattern and appear to control alteration and mineralization. Andesitic rocks are bleached, pervasively silicified, pyritic and brecciated. Mineral- ization occurs in numerous quartz, and less commonly calcite veins which strike generally to the north and dip steeply eastward.

The Tubal Cain mine was developed by a 52 metre deep shaft and two adits. The vein is also intersected by the 97 metre level of the Enterprise mine (092ISE028) and considerable drifting was reportedly done at that level. In these workings the Tubal Cain vein varies markedly in width, orientation and amount of sulphide mineralization. The Tubal Cain shear is a zone of intensely fractured quartz veins and lenses within sheared, carbonatized and pyritic country rock. Mineralization in the vein consists of pyrite, galena, sphalerite, tetrahedrite and chalcopyrite. Fifty metres north of the shaft, trenching exposed a quartz vein 33 centimetres wide striking 340 degrees and dipping 60 degrees east.

Production from the Enterprise (MINFILE 092ISE028), King William (MINFILE 092ISE110), Tubal Cain and Joshua (MINFILE 092ISE109) veins, from 1916 to 1944, totalled 70,390 tonnes with recovery grades of 3.4 grams per tonne gold, 101.9 grams per tonne silver, 0.026 per cent copper, 1.42 per cent lead and 0.24 per cent zinc (Assessment Report 31405).

Bibliography
EMPR ASS RPT 5152, 5565, 13152, 25968, 26522, 31405
EMPR AR 1885-496; 1886-212; 1887-274; 1888-314; 1890-377; 1916-429; *1917-228; 1918-244; 1930-205; 1931-115; *1933-178; 1934-D24; 1935-D13; 1936-D17
EMPR BULL 10, p. 110; 20, Part III, p. 25
EMPR EXPL 1984-210; 1989-119-134
EMPR FIELDWORK 1988, pp. 96,97
EMPR GEM 1974-148; 1975-E87
GSC MEM *249, p. 53
GSC MAP 886A; 887A; 1386A
GSC SUM RPT 1919 Part B
GSC OF *980
Gourlay, A.W. (2013-02-01): Independent Geological Report on the Stump Lake Au-Ag Property
Gourlay, A.W. (2013-09-13): Independent Geological Report on the Mineral Hill Property

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