brookite
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/brook"uyt/, n. Mineral.a brown, red, or black mineral, titanium dioxide, TiO2, trimorphous with rutile and anatase.[1875-80; named after H. J. Brooke (1771-1857), English mineralogist; see -ITE1]
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▪ mineralone of three minerals composed of titanium dioxide (TiO2) (see also rutile; anatase). It typically occurs as brown, metallic crystals in veins in gneiss and schist; it is also found in placer deposits and, less commonly, in zones of contact metamorphism. It is widespread in veins in the Alps; in Fronolen, north Wales, it forms crystals on crevice walls in diabase. Brookite forms crystals that belong to the orthorhombic system. For detailed physical properties, see oxide mineral (table).* * *
Universalium. 2010.
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Brookite — Catégorie IV : oxydes et hydroxydes[1] Brookite sur quartz, Pakistan … Wikipédia en Français
Brookite — is a mineral consisting of titanium oxide, TiO2, and hence identical with rutile and anatase in composition, but crystallizing in the orthorhombic system (see crystal structure). Brookite occurs rarely compared to the anatase and rutile forms of… … Wikipedia
Brookite — Brook ite, n. [Named from the English mineralogist, H. J. Brooke.] (Min.) A mineral consisting of titanic oxide, and hence identical with rutile and octahedrite in composition, but crystallizing in the orthorhombic system. [1913 Webster] … The Collaborative International Dictionary of English
brookite — ● brookite nom féminin (de H. J. Brooke, nom propre) Varité naturelle de bioxyde de titane, orthorhombique, de couleur brunâtre ou rougeâtre … Encyclopédie Universelle
brookite — [brook′īt΄] n. [after H. J. Brooke (1771 1857), Eng mineralogist] the hard, orthorhombic form of titanium dioxide, TiO2, ranging in color from yellow or brown to black … English World dictionary
brookite — brukitas statusas T sritis chemija apibrėžtis Mineralas. formulė TiO₂ atitikmenys: angl. brookite rus. брукит … Chemijos terminų aiškinamasis žodynas
brookite — noun Etymology: Henry J. Brooke died 1857 English mineralogist Date: 1825 titanium dioxide TiO2 occurring as a mineral in orthorhombic crystals commonly translucent brown or opaque brown to black … New Collegiate Dictionary
brookite — noun A dark brown mineral form of titanium dioxide, with the chemical formula TiO … Wiktionary
brookite — brook·ite … English syllables
brookite — ˈbru̇ˌkīt noun ( s) Etymology: Henry J. Brooke died 1857 English mineralogist + English ite : a mineral consisting of titanium dioxide TiO2 and identical in composition with rutile and octahedrite but occurring in orthorhombic crystals commmonly… … Useful english dictionary
