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File Created: 30-Mar-1988 by Jennifer W. Pell (JP)
Last Edit:  04-Dec-2014 by Laura deGroot (LDG)

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NMI
Name GERTRUDE POINT GARNET, DOUGLAS CHANNEL GARNET Mining Division Skeena
BCGS Map 103H064
Status Showing NTS Map 103H11E
Latitude 053º 39' 29'' UTM 09 (NAD 83)
Longitude 129º 12' 36'' Northing 5945498
Easting 486122
Commodities Garnet Deposit Types P02 : Kyanite-sillimanite schists
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks
Capsule Geology

In the Douglas Channel-Kitkiata area south of Prince Rupert, ex- tremely garnetiferous schists and gneisses have been reported (Area 1, Figure 10, Open File 1988-26). These garnet-bearing rocks are com- prised of Permian (?) and/or older metasediments and granatoid gneisses which are related to the Central Gneiss Complex.

The biotite-garnet schists and biotite-garnet gneisses host euhedral garnets which range from 0.25 to 2.0 centimetres in length and locally, comprise from 10 to 15 per cent of the rocks. Biotite- garnet schists along the shores of Douglas Channel often contain up to 50 per cent garnet (Padgham, 1958).

Along this ridgecrest on the north side of Douglas Channel, biotite-garnet schists and biotite-garnet gneisses host up to 15 per cent coarse euhedral garnet crystals ranging up to 2.0 centimetres diameter. Padgham (1958) reports zones of garnet-biotite schist along the shores of Douglas Channel containing up to 50 per cent garnet.

Bibliography
EMPR OF *1988-26, p. 15
EMPR FIELDWORK 2000, pp. 279-306; 2001, pp. 151-170
GSC MAP 23-1970; 1385A, 1868A
GSC P 70-41
GSC SUM RPT 1921, Part A, pp. 22-49
Padgham, W.A. (1958): *The Geology of the Ecstall-Quall Rivers area, British Columbia, unpublished M.Sc. Thesis, University of British Columbia, Vancouver, British Columbia, 202 pgs.
EMPR PFD 20676

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