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 118
microcline twinning. Optical tests show the plagioclase to be albite,some of which exhibits polysynthic twinning. Prismatic habit isstrongly developed in much of the plagioclase, and the entire feldsparcontent is very generally clouded by innumerable inclusions, the exactnature of which it was not… … pm **> *m T ? * --T.tVtU??.^ . •«# •A* #, A. PHOTOGRAPH OF FRESH SURFACE OF LECPARDITE SHOWING THE STONE WHEN BROKEN AT RIGHTANGLES TO THE LONG PARALLEL STREAKS OR PENCILS OF A DEAD BLACK COLOR.
Building stones · Quarries and quarrying
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Le triomphe de la langue françoise, dans lequel les principales difficultés qui s'y rencontrent sont revnersées [microform] (1664)](https://img.insideoutlibrary.com/img/200/ia-fre_b1888570-64-0.webp)
