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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 210

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 210
ous structures are by no meansrare in secondary depositions in cracks of the rocks, e.g., inchalcedony or aragonite. They constitute the formation knownas oolite, Fig. 190. In organic nature the spherulitic develop-ment is .sometimes quite marked, e.g., in the skeletal portions DEVELOPMENT OF ROCK… … FIG. 191.—Granospherite. Recrys-talized Oolite. FIG. 192.—Marble (Ordinario),Carrara, Italy. recrystallization. The outer form and sometimes also theconcentric structure may be preserved during this process. Itgives rise to a granospherite, Fig. 191. Distinctions canbe made in the character of the…

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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