Petrographic methods, the authorized English translation of Part I, Anleitung zum Gebrauch des Polarisationsmikroskops (3d. rev. ed.) and Part II, Die gesteinbildenden Mineralien (2d. rev. ed.) (1912)
Weinschenk, Ernst, 1865-1921, Clark, Robert Watson, b. 1884 · New York [etc] McGraw-Hill book company · leaf 124
FIG. 118.—Interference Figures of Uniaxial Crystals Cut Cblique to the Axis. portions of the black cross pass through the field of vision in a regular man-ner when the crystal plate is rotated. The difference between interferencefigures in oblique sections of uniaxial crystals and those of biaxial…
Mineralogy · Petrology · Microscopy
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