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File Created: 16-Jul-86 by Larry Jones(LDJ)
Last Edit:  01-Mar-89 by Laura L. Duffett(LLD)

Summary HelpHelp

NMI 103C16 Fe2
Name OLD TASU TOWNSITE, OLD TOWNSITE, TASU, JM 1 Mining Division Skeena
BCGS Map 103C080
Status Prospect NTS Map 103C16E
Latitude 52º 45' 04" N UTM 08 (NAD 83)
Longitude 132º 01' 26" W Northing 5848738
Easting 700850
Commodities Magnetite, Iron, Copper Deposit Types K03 : Fe skarn
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

These showings are on the old Tasu townsite, on Hunger Harbour, Fairfax Inlet. They are on located claims held by Wesfrob Mines Limited as part of the large block of the Tasu mine but are separate from the main Tasu orebodies (103C 003). Signs of old work indicate the mineralization was probably known about 1910. In 1954 Cominco located the showings and did some stripping and pitting. In the summer of 1964 Wesfrob drilled nine AX holes totalling 715 metres at the property.

The magnetite showings occur on the steeply dipping west limb of a synclinal pendant of Jurassic to Triassic Kunga Group limestone with a sheath of Upper Triassic Vancouver Group, Karmutsen Formation greenstone and skarn. These rocks are engulfed by diorite of the Middle Jurassic San Christoval Pluton. The greenstone and skarn varies in thickness from 6 to 46 metres and trends 130 degrees. Near the skarn sheath, ore replaces limestone with up to 10 metres wide of massive magnetite and scattered magnetite with some pyrite and chalcopyrite disseminated in the skarn.

Limited drilling proved less than 90,720 tons of relatively low-grade ore (National Mineral Inventory Card 103C16 Fe2).

Bibliography
EMPR AR 1964-46
EMPR BULL 54, p. 191
EMPR PF (Refer to *Tasu 103C 003)
GSC MAP 1385A
GSC P 86-20; 88-1E, pp. 213-216,221-227; 89-1H, pp. 95-112;  90-10, pp. 59-87, 163-172
MIN REV March/April 1988, pp. 19-24
PERS COMM (Anderson, R.G., March 1989)
Falconbridge File

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