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File Created: 30-Sep-1991 by William (Bill) Coombe (WC)
Last Edit:  21-Nov-2012 by George Owsiacki (GO)

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NMI 104A4 Cu1
BCGS Map 104A012
Status Developed Prospect NTS Map 104A04W
Latitude 056º 06' 16'' UTM 09 (NAD 83)
Longitude 129º 45' 16'' Northing 6217961
Easting 453074
Commodities Gold, Copper, Silver Deposit Types L01 : Subvolcanic Cu-Ag-Au (As-Sb)
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The George Gold-Copper Upper prospect is located about 1.3 kilometres south of the Stewart highway, 2.5 kilometres southeast of the confluence of Rufus Creek with the Bear River.

The area is underlain by flat lying to gently dipping Lower Jurassic andesite flows of the Unuk River Formation (Hazelton Group). Northwest-trending dikes are common in the area.

Several east trending, steeply south dipping quartz-jasper-barite veins occur. The veins are up to 6 metres wide, but average 1 to 2 metres in width. They comprise mainly quartz, with lesser amounts of jasper, barite and included country rock. Metallic minerals consist predominantly of chalcopyrite and pyrite with sporadically developed hematite, magnetite and arsenopyrite. Metallics form up to 50 per cent of the vein material.

The western Blue and Jasper veins form a continuous vein more than 335 metres long. The vein strikes at 110 degrees and dips 65 degrees south. Mineralization occurs continuously over a length of 145 metres and consists of pyrite, pyrrhotite, hematite, arsenopyrite and chalcopyrite.

The Green vein, east of the Blue-Jasper vein complex, consists of several veins and intervening stockworks. The vein is about 60 to 70 metres long and may be the extension of the Blue-Jasper vein.

The White vein, about 50 metres north of the Green vein, can be traced for a length of about 150 metres.

Channel samples across the veins range from less than 1 per cent up to 10 per cent copper and trace to 8.6 grams per tonne gold (Geological Survey of Canada Memoir 175, page 117).

Assuming continuity of the mineralization along the veins, reserves have been reported to total (indicated and inferred) 180,000 tonnes grading 2.0 per cent copper, 17.1 grams per tonne silver and 2.1 grams per tonne gold (Assessment Report 6382, page 12). Unclassified reserves were reported to be 453,550 tonnes grading 17.1 grams per tonne silver, 2.0 grams per tonne gold and 2.0 per cent copper (Statement of Material Facts July 12, 1979 - Tournigan Mining Explorations Ltd., G. Keyte, December 1978).

The prospect is on the Helena (Lot 4783) and Grandview (Lot 4793) claims, staked by W. George and F. Strohn in about 1911. Several opencuts had been emplaced by 1919. The property was optioned in 1920 by the Algunican Development Company Limited and in 1922-23 by the Granby Consolidated Mining, Smelting and Power Company, Limited; no work was reported. In 1925, the George Gold-Copper Mining Company Limited was incorporated and Cominco optioned the property in 1927. At least six holes were drilled before 1929. In 1971, Keith Copper Mines Ltd. acquired property near the showing and performed magnetometer surveys. In 1976, Tournigan Mining Explorations Ltd. purchased the 12 George Gold-Copper claims, including the Helena and Grandview claims. Tournigan carried out work in the area during 1976-78, but no specific work was reported on the showing. Tournigan Mining conducted sampling on their Bear Pass property, which includes this prospect, in 1991. In 2002, the Stro 1-3 and the BA 1-4 claims were acquired by E.R. Kruchkowski. In 2005, the claims were jointly owned by Pinnacle Mines Corp. (50%) and Mountain Boy Minerals Ltd. (50%). In August and September of 2006, follow-up prospecting and sampling led to the discovery of the Barbara zone. The summer program consisted of geochemical sampling that included chip sampling across mineralized structures and horizons and grab sampling of outcrop and float; a total of 32 grab, 110 float and 4 chip samples were collected. Mountain Boy Minerals optioned the property in the fall of 2006 and from the fall of 2006 to the fall of 2008, the Barbara zone was drilled. Over the next three years, a total of 13,550 metres of BTW size core was drilled in 93 holes from 55 different drill pads. Some limited trenching and surface sampling was also conducted during this time (internal company data, 2009). In 2010, Great Bear Resources Ltd. conducted an exploration program on the BA property which included a VTEM (helicopter-borne time-domain electromagnetic) survey and a diamond drill program comprising 85 drillholes totalling 14,791 metres.

EMPR AR 1914-155; 1915-72; 1916-86; 1917-67,85; 1918-79; 1919-66; 1920-57; 1921-66; 1922-77; 1923-75; 1924-69; 1925-94; 1926-95; 1927-94,480; 1928-109; 1929-99,508; 1930-442
EMPR ASS RPT *6382, 7201, 20379, *22172, 23244, 28676, 29470, 29769, 30308, 31956, *32877
EMPR EXPL 1977-E221
EMPR GEM 1972-512
EMPR OF 1987-22; 1994-14; 1998-10
EMR MIN BULL MR 223 B.C. 316
EMR MP CORPFILE (The Algunican Development Company, Limited; The George Gold-Copper Mining Company, Limited; Keith Copper Mines Ltd.; Tournigan Mining Explorations Ltd.)
GSC MAP 28A; *216A; *217A; 307A; *315A; 9-1957; 1418A
GSC MEM 159, p. 27; *175, p. 115
GSC OF 2582; 2779
GSC SUM RPT 1911, p. 67
ECON GEOL 1928, Vol. 23, No. 2, pp. 193-208
GCNL #127, #136, #160, 1976; #161, 1978; #18, 1980
N MINER Apr.2, 1928; Sept. 9, 1976; July 23, 1990
Placer Dome File