- a brown, red, or black mineral, titanium dioxide, TiO2, trimorphous with rutile and anatase.
Origin of brookite
1875–80; named after H. J. Brooke (1771–1857), English mineralogist; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for brookite
Brookite occurs only as crystals, never in compact masses, and is usually associated with either anatase or rutile.
Minute crystals of brookite have been detected with anatase and rutile in the iron-ore of Cleveland in Yorkshire.
Titanic acid occurs in nature crystallized in anatase, arkansite, brookite, and rutile.
- a reddish-brown to black mineral consisting of titanium oxide in orthorhombic crystalline form: occurs in silica veins. Formula: TiO 2
C19: named after Henry J. Brooke (died 1857), English mineralogist
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