The building and decorative stones of Maryland, containing an account of their properties and distribution (1898)
Merrill, George P. (George Perkins), 1854-1929, Mathews, Edward Bennett, b. 1869 · Baltimore, Johns Hopkins press · leaf 68
97 solution, and we find it passing superficially into a clay without theproduction of sand. The light colors cliaracteristic of most marbles render iron stainspeculiarly objectionable, and as pyrite is a very common constituentof such rocks, much care is necessitated in its selection. The… … Fifi. U.—Pliotiimicnurrapli of Scnecii Samlstone (masriiitii-il ten diameters). Sandstones, on account of the widely varying character of thematerials of which they are made up, variation in texture, degrees ofporosity, etc., are perhaps as a whole more variable in their weatheringqualities than…
Stone · Building stones
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