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File Created: 01-Oct-1986 by Larry Jones (LDJ)
Last Edit:  11-Aug-1989 by Laura L. Duffett (LLD)

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NMI 103I2 Fe1
BCGS Map 103I017
Status Developed Prospect NTS Map 103I02E
Latitude 054º 10' 24'' UTM 09 (NAD 83)
Longitude 128º 39' 16'' Northing 6002862
Easting 522557
Commodities Iron, Magnetite, Copper Deposit Types K03 : Fe skarn
Tectonic Belt Coast Crystalline Terrane Stikine, Plutonic Rocks
Capsule Geology

Metamorphosed volcanic rocks of the Middle Jurassic Hazelton Group are intruded by a granodiorite stock which forms the core of Iron Mountain. The intrusive and associated dykes are part of the Cretaceous to Tertiary Coast Plutonic Complex. Within the volcanic rocks, which are largely andesite, are irregular epidote-garnet- magnetite-silica skarns and related lenses of magnetite with minor pyrite and chalcopyrite. The mineralized area strikes about 010 degrees and dips 75 degrees west, is exposed over a 1.4 kilometre length, from 75 to 530 metres elevation, and varies in width from 100 to 150 metres. Total reserves include 5.36 megatonnes averaging 22.09 per cent soluble iron (Lazenby, 1962).

The magnetite occurs in three zones known as the "A" zone, "B" zone, and Summit zone. The "A" zone, lowest in elevation, is about 180 by 120 metres, with drill indicated reserves of 2,194,563 tonnes of 22.62 per cent acid soluble iron. The Summit zone, 1100 metres to the north-northeast, measures 300 by 90 metres and contains 3,160,465 tonnes of 21.73 per cent acid soluble iron (Property File - Lazenby, H.S., 1962). The "B" zone, between the above two zones contains irregular mineralization. Drilling has been shallow and it is estimated that more magnetite can be found downdip. The northern extension also remains open. A maximum of 9 megatonnes of 20 per cent soluble iron is postulated (Lazenby, 1962).

The rocks are cut by post-ore felsic to mafic dykes and north- trending faults.

EMPR AR 1903-52; 1904-102; 1908-57; 1909-57; 1925-67; 1926-71,446; 1929-72; 1932-48; *1945-80,81; 1958-73; 1959-15; 1960-13; *1961- 17,18; 1962-14,15
EMPR OF *1988-28, p. 101, Fig. 38
EMPR PF (*Lazenby, H.S., 1962: Wedeene Iron Deposit)
EMR MP CORPFILE (Q.M.I. Minerals Ltd.)
GSC EC GEOL No. 3, Vol. 1, p. 26
GSC MAP 278A; 1136A; 11-1956; 1385A
GSC MEM 329, pp. 97,98
Falconbridge File