... Report on the building and ornamental stones of Canada, vol. I-V (1912)
Parks, W. A. (William Arthur), 1868-1936, Canada. Mines Branch · Ottawa : Government printing bureau · leaf 406
high in magnesium carbonate, containing the exacttheoretical precentage of pure dolomite. Xo. 131.—This stone is of a bluish cast and resemljles Plate LXXVII,Xo. 2. In structure it is very like Xo. 130, l)ut it is undoul^tedly muchmore difficult to work.
Building stones
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