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boehmite

[bey-mahyt, boh-] /ˈbeɪ maɪt, ˈboʊ-/
noun
1.
a mineral, hydrous aluminum oxide, AlO(OH), a major component of bauxite.
Origin
1925-1930
1925-30; < German Böhmit, named after J. Böhm, 20th-century German scientist; see -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for boehmite

Boehmite

/ˈbɜːmaɪt/
noun
1.
a grey, red, or brown mineral that consists of alumina in rhombic crystalline form and occurs in bauxite. Formula: AlO(OH)
Word Origin
C20: from German Böhmit, after J. Böhm, 20th-century German scientist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for 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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