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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 280

An illustration from 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, leaf 280
n contact rocks. It forms pseudomorphs after the bisilicatesin soda rocks. It is also encountered with fine hair-like development in thepores of trachytes and is known as breislakite. Its determination is madevery difficult by the fact that it is almost entirely nontransparent but, onthe other…

Mineralogy · Petrology · Microscopy

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More pictures from 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.)

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