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File Created: 06-Oct-89 by Peter S. Fischl(PSF)
Last Edit:  11-Mar-91 by Peter S. Fischl(PSF)

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NMI
Name MCKENZIE LIMESTONE, WILLISTON LAKE, BEND Mining Division Cariboo
BCGS Map 093O014
Status Past Producer NTS Map 093O03E
Latitude 55º 10' 17" N UTM 10 (NAD 83)
Longitude 123º 12' 03" W Northing 6113882
Easting 487208
Commodities Limestone Deposit Types R09 : Limestone
Tectonic Belt Omineca Terrane Slide Mountain
Capsule Geology

Limestone was quarried 2 kilometres southwest of Williston Lake, 1.3 kilometres northwest of Lignite Creek by Knox Western Capital Inc.

The quarry is developed in limestone of the Carboniferous to Permian Slide Mountain Group, just west of the McLeod fault. The limestone is exposed in a 108 by 60 metre outcrop, projecting 130 metres above the surrounding overburden.

The outcrop is comprised of a 50-metre thick bed of clean, buff coloured, chemical grade limestone with some argillaceous carbonate, overlain and underlain by siliceous and dolomitic limestone. The contact with the overlying impure limestone strikes 133 degrees and dips 28 degrees southwest. A fault of similar orientation cuts through the middle of the purer limestone bed. Mapping, surface sampling and diamond drilling have defined 300,000 tonnes of economically recoverable limestone averaging 55.06 per cent CaO, 0.41 per cent MgO, 0.17 per cent SiO2, 0.46 per cent Al2O3 and 0.17 per cent Fe2O3 (Industrial Mineral File - MacLeod, W.A., 1988, page 2).

The deposit was initially quarried by B.C. Forest Products Ltd. to construct a causeway across the south end of Williston Lake, sometime prior to 1986. Knox Western Capital Inc. began quarrying limestone in 1988 for paper mills at MacKenzie and Quesnel. A total of 33,000 tonnes were quarried on a seasonal basis during 1988 and 1989. The company did not resume quarrying operations in 1990 due to financial difficulties.

Bibliography
EMPR PF (*MacLeod, W.A. (1986): Report; *MacLeod, W.A.  (1988): Report)
GSC MAP 11-1961; 1424A
GSC OF 925

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