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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  20-Jan-1991 by Dorthe E. Jakobsen (DEJ)

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NMI
Name SILVER LEAF (L.29G), MOUNTAIN ASH (L.28G), HEMLOCK FR. (L.30G) Mining Division Victoria
BCGS Map 092C099
Status Showing NTS Map 092C16E
Latitude 048º 57' 57'' UTM 10 (NAD 83)
Longitude 124º 13' 39'' Northing 5424384
Easting 410157
Commodities Gold, Silver, Copper Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Silver Leaf showings are located just to the north of the El Capitan prospect (092C 019). The claims were staked in about 1911. Previous work consists of 3 adits, the first and main adit was driven in 1922-23 and the other two were driven in 1945.

The area is underlain by massive basalt of the Upper Triassic Karmutsen Formation, Vancouver Group. The area is cut by east striking, steeply dipping shear zones which contain sulphide mineralization with gold values. Some zones are up to 610 metres in vertical distance, and 1.6 kilometres in length but these are not known to contain mineralization. The shorter, rusty zones are the best mineralized.

The showings consist of 3 shear zones which strike 270 degrees and dip 65 degrees south. The shear zones contain massive sulphide pods in a quartz-calcite sheared basalt gangue. The sulphide-rich zone is up to 1.2 metres wide. Mineralization consists of pyrite, chalcopyrite, pyrrhotite and minor arsenopyrite.

A sample, taken over 1.3 metres, assayed 17.14 grams per tonne gold, 150.83 grams per tonne silver, and 4.5 per cent copper (Bulletin 37 page 65).

Bibliography
EMPR AR 1919-224; 1921-215; 1922-243; 1923-243; 1926-323; 1927-348; 1928-376; 1930-302; 1937-F33
EMPR ASS RPT 7832
EMPR BULL 1, (1932) p. 136; *37, pp. 63-65
EMPR EXPL 1979-126
EMPR FIELDWORK 1978, pp. 38-40; 1986, pp. 223-229; 1987, pp. 81-91; 1989, pp. 503-510
EMPR MP MAP 1992-2
EMPR OF 1987-2; RGS 24, 1990
EMPR PF (In General File: B.C. Forest Products Road Map, Cowichan Lake Area, 1963; In 092C 020: Chemainus River Area Geology Map, 1969; Sketch of Main showings, Date unknown; Report on Silver Leaf, Author and Date unknown; Stevenson, J.S.(1937): Special Report #39 and Maps; Report by Associate Mining Engineer, 1938; Notes, Sketch's and Composite Plan, 1949; Laanela, H. (1965): E.N. Report Occurrence #40; Mines Inspection Report, 1975)
GSC MAP 1386A
GSC MEM 13
GSC OF 463; 821; 1272
GSC P 72-44; 76-1A; 79-30
Carson, D.J.T. (1968): Metallogenic study of Vancouver Island with emphasis on the relationships of mineral deposits to plutonic rocks, Ph.D. Thesis, Carleton University

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