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File Created: 23-Jun-1986 by Larry Jones (LDJ)
Last Edit:  04-May-2020 by Karl A. Flower (KAF)

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NMI 103G4 Cu1
Name COPPER BAY, OLD SHAFT, MILDRED, SNOW Mining Division Skeena
BCGS Map 103G012
Status Showing NTS Map 103G04W
Latitude 053º 10' 49'' UTM 09 (NAD 83)
Longitude 131º 46' 46'' Northing 5895742
Easting 314375
Commodities Copper, Silver Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The occurrence is located on Copper Bay on the east side of Moresby Island.

The area is underlain predominately by andesitic agglomerates and tuffs of the Middle Jurassic Yakoun Group with lesser Upper Cretaceous Honna Formation (Queen Charlotte Group) conglomerates. The rocks are cut by rhyolite dikes and diorite intrusives of the Tertiary Kano Plutonic Suite and are bounded to the east by the northwest trending Sandspit fault.

Disseminated chalcopyrite, pyrite and malachite occur in the Yakoun agglomerate within a calcite cemented breccia vein and/or fissure zone.

Selected samples in 1907 assayed 10 per cent copper and 69 grams per tonne silver (Minister of Mines Annual Report 1907, page 72).

Work History

The occurrence was discovered in 1862 by a Mr. Waddington. A shaft was sunk only to be abandoned in late 1863.

In 1907 D.R. Young and associates bonded the property from Sheldon and Shabbard. Young unwatered the shaft to a depth of 27 metres and took soundings of 14 metres or more. Two cross cuts were reported just above 27 metres, one to the east and one to the west, extending about 7.6 metres from the shaft. The shaft was located on a fissure a few centimetres wide.

More recent work on the area, since the late 1970s, has been focused on the Baxter Creek (MINFILE 103G 005) occurrence to the north and a full exploration and work history and can be found there.

Bibliography
EMPR AR *1905-81; *1907-59,71,72; 1909-82
EMPR ASS RPT *2343, 2777, 7684, 10140, 14695
EMPR BULL *54, p. 220
EMPR EXPL 1979-251; 1980-386,387; 1984-368
GSC MAP 176A; 177A; 278A; 922; 1385A; 3-1990
GSC P 86-20; 88-1E, pp. 217-219; 89-1H, pp. 7-11; 90-10
GCNL #88, 1984; #110, 1988
Falconbridge File
Lennan, W.B. (2009-06-08): Technical Summary Report on the Sandspit Property

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