brookite
[broo k-ahyt]
- a brown, red, or black mineral, titanium dioxide, TiO2, trimorphous with rutile and anatase.
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Origin of brookite
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for brookite
Historical Examples
Minute crystals of brookite have been detected with anatase and rutile in the iron-ore of Cleveland in Yorkshire.
Brookite occurs only as crystals, never in compact masses, and is usually associated with either anatase or rutile.
Titanic acid occurs in nature crystallized in anatase, arkansite, brookite, and rutile.
brookite
- a reddish-brown to black mineral consisting of titanium oxide in orthorhombic crystalline form: occurs in silica veins. Formula: TiO 2
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Word Origin
C19: named after Henry J. Brooke (died 1857), English mineralogist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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