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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  24-Apr-89 by Garry J. Payie(GJP)

Summary HelpHelp

NMI
Name WFP 7, YZ, SEPTEMBER, CONTACT, GOLD 5, QUAD, NAT, GOLD EXCHANGE, STAMPEDE Mining Division Nanaimo
BCGS Map 092K014
Status Prospect NTS Map 092K03E
Latitude 50º 09' 58" N UTM 10 (NAD 83)
Longitude 125º 14' 15" W Northing 5559496
Easting 340205
Commodities Gold, Silver, Copper Deposit Types K01 : Cu skarn
Tectonic Belt Insular Terrane Wrangell, Plutonic Rocks
Capsule Geology

The WFP 7 showing is located 1 kilometre south-southwest from September Lake and east of Quadra Creek on Quadra Island. It is believed to be located on the old workings of the YZ claim and/or the Stampede claim of the early 1900's. Over 30 trenches and pits cover an area greater than 200 metres in length along the northwest strike.

The geology of Quadra Island consists of limestones and vol- canics rocks in contact with the Juro-Cretaceous Coast Plutonic Complex. Striking northwest through the centre of the island is a soft dark, banded, tightly folded, crystalline limestone of the Upper Triassic Quatsino Formation. The banding is caused by argillaceous layers a few centimetres thick. To the southwest and strati- graphically below are finely porphyritic andesites of the Upper Triassic Karmutsen Formation. Locally, the volcanics are basaltic and may exhibit pillow and pyroclastic features. The Quatsino Formation limestone and Karmutsen Formation volcanic rocks are intimately interbedded along the central zone of the island, which is known historically as the "lime belt". The "lime belt" crosses the island in a northwest direction from Open Bay to Deepwater Bay. The north- eastern edge of the belt is in contact (partly intrusive, partly faulted) with the Jurassic to Cretaceous Coast Plutonic Complex. It ranges from quartz diorite to granodiorite in composition.

This occurrence is located within the "lime belt", approximately 1 kilometre from the granodiorite contact. Quartz veining, fracturing and some skarn development is evident. Mineralization is found disseminated in quartz veins, along fractures, along limestone- andesite contacts and throughout both the limestone (in places a skarn) and andesite. Sulphide minerals found at this showing include arsenopyrite, pyrrhotite, pyrite and chalcopyrite, minor bornite and pyrolusite.

A typical trench sample taken in 1975 assayed 17.69 grams per tonne gold, 8.23 grams per tonne silver and 0.30 per cent copper over 1.5 metres (Assessment Report 5680). Material chipped from a chalcopyrite-rich rock in 1972 assayed 158.0 grams per tonne gold, 61.0 grams per tonne silver and 0.92 per cent copper.

Bibliography
EMPR AR 1898-1197; 1913-284,286; 1914-382
EMPR ASS RPT 3100, 3167, *5680, *10538, 16143, 17797
EMPR BULL 23; 40
EMPR EXPL 1975-E111; 1981-320; 1987-218
EMPR GEM 1970-280; 1971-313
EMPR PF (Sheppard, E.P., (1970,1972): Geological Report on the  Contact Claims, Quadra Island, Prince Stewart Mines Ltd., (1973):  Geological Report on the Pomeroy Group and Contact Group, Quadra  Island, Prince Stewart Mines Ltd.; Prospectus, Prince Stewart  Mines, Apr. 19, 1971)
GSC MAP 120A; 1386A
GSC MEM 23, p. 146
GSC OF 480
GSC P 70-1A, pp. 44-49; 71-1A, pp. 31-33; 72-1A, pp. 21-23; 73-1A,  pp. 42,43
GSC SUM RPT *1913, pp. 53-75

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