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File Created: 14-Mar-1986 by Gary R. Foye (GRF)
Last Edit:  05-Oct-1989 by Peter S. Fischl (PSF)

Summary Help Help

NMI
Name BOWRON RIVER Mining Division Cariboo
BCGS Map 093H072
Status Prospect NTS Map 093H12E
Latitude 053º 42' 40'' UTM 10 (NAD 83)
Longitude 121º 41' 43'' Northing 5952171
Easting 586113
Commodities Limestone Deposit Types R09 : Limestone
Tectonic Belt Omineca Terrane Cariboo
Capsule Geology

Limestone of the Lower Cambrian Mural Formation(?) outcrops over a 750 by 1000 metre area on the steep west side of a small conical shaped mountain. The deposit is 4.5 kilometres west of the Bowron River, 23.8 kilometres south-southeast of the conjunction of Highway 16 and the Bowron River logging road.

The deposit is comprised of medium to coarse grained (3 to 5 millimetre), white to grey to black limestone. The white to light grey rock occurs higher up on the mountain and the dark grey to black rock lies near the base. A sample taken from a stock pile of crushed limestone (0.5 centimetre sized) contained 46.8 per cent CaO, 7.6 per cent MgO, 0.34 per cent SiO2, 0.08 per cent Al2O3, 0.11 per cent Fe2O3 and 44.6 per cent ignition loss (Fieldwork 1985, p. 240).

Twelve grab samples of limestone rubble (talus), weathered from higher up on the mountain side, averaged 53.90 per cent MgO, 0.80 per cent MgO, 2.16 per cent SiO2, 0.10 per cent Al2O3, 0.07 per cent Fe2O3, 0.01 per cent Na2O, 0.07 per cent K2O, 0.01 per cent TiO2, 0.01 per cent MnO and 0.01 per cent Cr2O3 (Industrial Mineral File - M. Suess, 1987).

Western Lime & Marble Inc. developed a small quarry in the face of a cliff in 1983. Some limestone, intended for the agricultural markets in Alberta, was crushed on site. The high cost of transporting the limestone to Alberta led to the discontinuation of further development.

Bibliography
EMPR EXPL 1983 p.211
EMPR FIELDWORK 1983, pp. 215-216; *1985 p. 240
EMPR IND MIN FILE (*Suess, Mike 1987 Report (in Ministry Library))
GSC MAP 1424A
GSC P 72-35, p. 51
EMPR PFD 14939

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