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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  14-Feb-1989 by Wim S. Vanderpoll (WV)

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NMI 092L2 Au5
Name LUCKY STRIKE, FREE GOLD, VANCOUVER GIRL Mining Division Alberni
BCGS Map 092L006
Status Showing NTS Map 092L02W
Latitude 050º 03' 39'' UTM 09 (NAD 83)
Longitude 126º 50' 45'' Northing 5547617
Easting 654182
Commodities Gold, Copper Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Insular Terrane Wrangell, Plutonic Rocks
Capsule Geology

The Lucky Strike occurrence lies north of the Zeballos gold camp, in an area underlain by Lower Jurassic Bonanza Group basaltic to rhyolitic volcanic rocks and Upper Triassic Vancouver Group Quatsino Formation limestone. Dioritic to granodioritic Jurassic plutons of the Zeballos intrusion phase of the Island Plutonic Suite have intruded all older rocks.

The Lucky Strike occurrence consists of two shear veins hosted by Late Jurassic granodiorite near the contact with Quatsino lime- stone: 1) The Vancouver Girl shear, also referred to as Lucky Strike shear, strikes 030 degrees and dips 80 degrees south. The average width is 25 centimetres. The zone consists of locally silicified sheared diorite. Minerals include pyrite, chalcopyrite and free gold and three samples over 20 centimetres each averaged 7.8 grams per tonne gold (Property File - Jobin, F., 1938, page 1). Bulletin 27, page 131, states that the zone follows a 60 centi- metre wide feldspar porphyry dyke that traces a zone of diorite- granodiorite breccia on a 047 degree strike and an average width of less than 15 centimetres. 2) The Free Gold or Lucky Strike Vein is located 400 metres north of the Vancouver Girl and has been explored over 300 metres of its 043 degree strike. The vein is vertical and follows in places the wall of a mafic dyke. Width ranges from 4 to 15 centimetres. Vein material consists of locally oxidized quartz-pyrite-free gold. Assays between 2.7 and 113.8 grams per tonne gold are reported (Property File - Jobin, F., 1938, page 2).

Bibliography
EMPR BULL 20-V, p. 16; *27, p. 131
EMPR FIELDWORK 1982, p. 290; 1983, p. 219
EMPR PF (Jobin, F., 1938, Report on the Lucky Strike Group for Pioneer Gold Mines)
GSC EC GEOL 1-1947
GSC MAP 4-1974; 255A; 1028A; 1552A
GSC MEM 204; 272, p. 59
GSC OF 9; 170; 463
GSC P 38-5; 40-12; 69-1A; 70-1A; 72-44; 74-8; 79-30
GSC SUM RPT 1929A; 1932A
CIM Trans. Vol. 42, 1939, pp. 225-237; 1948, pp. 78-85; 72, pp. 116-125
N MINER Apr. 1938, pp. 39-45
Carson, D.J.T., 1968, Metallogenic study of Vancouver Island with emphasis on the relationship of plutonic rocks to mineral deposits, Ph.D. thesis, Carleton University, Ottawa.
Stevenson, J.S.,1938, Lode Gold Deposits of the Zeballos Area
EMPR PFD 12301

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