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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  27-Jul-1989 by Peter S. Fischl (PSF)

Summary Help Help

NMI
Name KOEYE RIVER Mining Division Skeena
BCGS Map 092M071
Status Past Producer NTS Map 092M13W
Latitude 051º 46' 55'' UTM 09 (NAD 83)
Longitude 127º 51' 42'' Northing 5737399
Easting 578525
Commodities Limestone Deposit Types R09 : Limestone
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks
Capsule Geology

A wide band of limestone extends northeast from the mouth of the Koeye River for 1000 metres, outcropping mostly along its northwest bank, 9 kilometres south of Namu on the coast. The band is situated in an elongate roof pendant of schist and gneiss within granitic rocks of the Jurassic to Tertiary Coast Plutonic Complex. The limestone strikes 060 degrees and dips nearly vertical. The band is 122 metres wide near its northeast end.

The deposit is comprised of fine to coarse-grained, white to dark bluish grey limestone. The band contains streaks, veinlets and disseminations of dolomite and silicates over most of its length, except at the northeast end where the limestone lacks such impurities. Dykes commonly intrude the limestone, especially to the southwest.

A chip sample taken across the 122 metre width on the northeast end of the band in the vicinity of a quarry analyzed 54.15 per cent CaO, 0.93 per cent MgO, 0.74 per cent SiO2, 0.23 per cent Al2O3, 0.12 per cent Fe2O3 and nil sulphur (CANMET Report 811, page 176, Sample 30A).

Limestone was quarried on the north side of the Koeye River, 1.6 kilometres northeast of Koeye Point between 1934 and 1969 for the Ocean Falls pulp mill.

Bibliography
EMPR AR 1934-641; 1935-B30; 1936-F65; 1937-F38; 1938-F71; 1939-112; 1940-98; 1941-93; 1942-91; 1943-86; 1944-82; 1945-131; 1946-205; 1947-218; 1948-189; 1949-256; 1950-224; 1957-88; 1958-97; 1959- 175; 1960-147; 1961-150; 1963-146; 1964-187; 1965-267; 1966-268; 1967-310
EMPR OF 1992-18, p. 55
GSC MAP 92A; 1386A
GSC P 1968-1A, pp. 37-40
GSC SUM RPT 1908, pp. 38-40
CANMET RPT *811, Part 5, pp. 167,168,176
EMPR PFD 13029

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