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brookite

[broo k-ahyt] /ˈbrʊk aɪt/
noun, Mineralogy
1.
a brown, red, or black mineral, titanium dioxide, TiO 2 , trimorphous with rutile and anatase.
Origin of brookite
1875-1880
1875-80; named after H. J. Brooke (1771-1857), English mineralogist; see -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for brookite

brookite

/ˈbrʊkaɪt/
noun
1.
a reddish-brown to black mineral consisting of titanium oxide in orthorhombic crystalline form: occurs in silica veins. Formula: TiO2
Word Origin
C19: named after Henry J. Brooke (died 1857), English mineralogist
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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