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boehmite

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boehm⋅ite

  [bey-mahyt, boh-]
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–noun
a mineral, hydrous aluminum oxide, AlO(OH), a major component of bauxite.
Origin:
1925–30; < G Böhmit, named after J. Böhm, 20th-century German scientist; see -ite 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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boehm·ite   (bā'mīt', bō'-)   
n.  A white to dark reddish-brown orthorhombic mineral, AlO(OH), present in bauxite.

[German Böhmit, after J. Böhm (1858-1930), German scientist.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia

boehmite

white and relatively soft basic aluminum oxide [AlO(OH)] that is a common mineral in bauxite, in which it forms disseminated grains or pealike masses. It is especially abundant in European bauxites, sometimes as the main constituent; bauxites from the Western Hemisphere commonly contain only a few percent boehmite. Deposits exist at Gant and Baratka, Hung.; Stangenrode, Ger.; Ayr, Scot.; and Recoux, Pereille, and Cadarcet, France. Boehmite is dimorphous (identical in composition but differing in crystal structure) with diaspore; its crystals have orthorhombic symmetry. For detailed physical properties, see oxide mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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