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 224
t opening made on top of the hill and near the northeastlimits of the exposure, these irregularities are almost entirely absent andthe color of the granite is quite uniform, affording a high grade ofgranite for general building purposes. Veins and dikes usually found in most granites are nowhere… … THE VARIETIES OF BUILDING STONES. 155 perhaps one or two exceptions, along an irregular twisted or warpedquarry-face. Microscopical Examination.—Under the microscope thin sections ofthe Mt. Airy granite show the presence of the usual granite minerals,such as quartz, feldspar, light and dark micas,…
Building stones · Quarries and quarrying
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