..Report on the building and ornamental stones of Canada, volI-V . [ Potsdam-Beekmantown Sandstone, VVm. Gordons Quarry. Post-office, Napanee, 127 Under the microscope the rock is seen to be composed of grains of quartzof very irregular size. The larger particles are as much as one mm. in dia-meter and are generally well rounded, the smaller grains are more angularand fill the interstices between the larger grains. The cementing materialis carbonate of lime with a small amount of argillaceous matter. The porespaces are scarcely perceptible under the microscope. The physical properties of
..Report on the building and ornamental stones of Canada, volI-V . [ Potsdam-Beekmantown Sandstone, VVm. Gordons Quarry. Post-office, Napanee, 127 Under the microscope the rock is seen to be composed of grains of quartzof very irregular size. The larger particles are as much as one mm. in dia-meter and are generally well rounded, the smaller grains are more angularand fill the interstices between the larger grains. The cementing materialis carbonate of lime with a small amount of argillaceous matter. The porespaces are scarcely perceptible under the microscope. The physical properties of the stone are as follows:— Specific gravity Weight per cubic foot, lbs Pore space, per cent Ratio of absorption, per cent Coefficient of saturation Permeability, per square inch, per hour. Crushing strength, lbs. per square inch 11221 Crushing strength after freezing, lbs. per square inch Loss on freezing, per cent Loss on treatment with carbonic acid, grams per square inch Transverse strength, lbs. per square inch. . .Chiselling factor An analysis by Mr. Wait gives 0-20 per cent ferrous oxide and O3-lper cent ferric oxide. No. 44.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuildin, bookyear1912
