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Auguste Michel-lvyAuguste Michel-Lvy (August 7, 1844 - September 27, 1911), French geologist, was born in Paris. He became inspector-general of mines, and director of the Geological Survey of France. He was distinguished for his researches on eruptive rocks, their microscopic structure and origin; and he early employed the polarizing microscope for the determination of minerals. In his many contributions to scientific journals he described the granulite group, and dealt with pegmatites, variolites, eurites, the ophites of the Pyrenees, the extinct volcanoes of Central France, gneisses, and the origin of crystalline schists. He wrote Structures et classification des roches ruptives (1889), but his more elaborate studies were carried on with F Fouqu. Together they wrote on the artificial production of feldspar, nepheline and other minerals, and also of meteorites, and produced Minralogie micrographique (1879) and Synthse des minraux et des roches (1882). Levy also collaborated with Alfred Lacroix in Les Minraux des roches (1888) and Tableau des minraux des roches (1889).
Michel-Levy, Auguste Michel-Levy, Auguste Michel-Levy, Auguste
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