The building and ornamental stones of North Carolina (1906)
Watson, Thomas L. (Thomas Leonard), 1871-1924, Laney, Francis Baker, 1875-1938, Merrill, George P. (George Perkins), 1854-1929 · Raleigh, [N.C.] : E.M. Uzzell, Public Printer · leaf 40
ometimes by the quarrymen as bastard granites. On account of the parallel arrangement of the minerals, the gneisseswork very unevenly in different directions and cannot be utilized forhigh grade, finely dressed work. For massive masonry, bridge abut-ments, they are often, however, fully equal to… … A. MICRO-STRUCTURE OF GRANITE, MT. AIRY, SURRY COUNTY.
Building stones · Quarries and quarrying
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