fluorite


fluorite
/floor"uyt, flawr"-, flohr"-/, n.
a common mineral, calcium fluoride, CaF2, occurring in green, blue, purple, yellow, or colorless crystals, usually in cubes: the principal source of fluorine, used also as a flux in metallurgy and for ornament. Also called fluor, fluorspar, fluor spar.
[1865-70; < It; see FLUOR-, -ITE1]

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Common halide mineral, calcium fluoride (CaF2); the principal fluorine mineral.

Fluorite occurs most commonly as a vein mineral and is often associated with lead and silver ores; it also occurs in cavities, sedimentary rocks, pegmatites, and hot-springs areas. It is widespread in China, South Africa, Mongolia, France, Mexico, Russia, and the central U.S. Fluorite is used in the manufacture of steel, aluminum fluoride, artificial cryolite, and aluminum. It is used in glassmaking, in iron and steel enamelware, in the production of hydrofluoric acid, in the refining of lead and antimony, and (as a catalyst) in the manufacture of high-octane fuels.

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also called  Fluorspar,  
 common halide mineral, calcium fluoride (CaF2); the principal fluorine mineral. It is usually quite pure, but as much as 20 percent yttrium or cerium may replace calcium. Fluorite occurs most commonly as a glassy, many-hued vein mineral and is often associated with lead and silver ores; it also occurs in cavities, in sedimentary rocks, in pegmatites, and in hot-springs areas. It is widespread in China, South Africa, Mongolia, France, Mexico, Russia, and the central United States. Fluorite is used as a flux in the manufacture of open-hearth steel, of aluminum fluoride, of artificial cryolite, and of aluminum. It is used in opalescent glass, in iron and steel enamelware, in the production of hydrofluoric acid, in the refining of lead and antimony, and in the manufacture of high-octane fuels (as a catalyst). Because of its low index of refraction and low dispersion, clear, colourless fluorite of optical quality is used for apochromatic lenses. At one time blue john, a variety from Derbyshire, Eng., was widely used in ornamental vases and other objects. For detailed physical properties, see halide mineral (table).

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Universalium. 2010.

Look at other dictionaries:

  • Fluorite — General Category Halide mineral Chemical formula CaF2 …   Wikipedia

  • Fluorite — Flu or*ite, n. (Min.) Calcium fluoride ({CaF2}), a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a… …   The Collaborative International Dictionary of English

  • fluorite — s. f. [Mineralogia] Fluoreto natural de cálcio que se apresenta cristalizado em cubos ou octaedros de cores brilhantes e variadas.   ♦ Grafia no Brasil: fluorita …   Dicionário da Língua Portuguesa

  • fluorite — ► NOUN ▪ a mineral form of calcium fluoride …   English terms dictionary

  • fluorite — [flôr′īt΄, floor′īt΄] n. [ FLUOR(O) + ITE1] a crystalline mineral, CaF2, with perfect cleavage, used as a flux, in glassmaking, etc. and as the principal source of fluorine; calcium fluoride: see MOHS SCALE …   English World dictionary

  • Fluorite — Fluorine Fluorite CatégorieIV : halogénures Fluorite sur quartz Le Beix France (10x7cm) Général Catégorie …   Wikipédia en Français

  • fluorite — fluorine [ flyɔrin ] n. f. • 1833; de fluor ♦ Chim. Fluorure de calcium naturel (cf. Spath fluor). On dit aussi FLUORITE . ● fluorite ou fluorine nom féminin Fluorure naturel de calcium, de formule CaF2, qui cristallise le plus souvent en cubes… …   Encyclopédie Universelle

  • fluorite — noun A widely occurring mineral (calcium fluoride), of various colours, used as a flux in steelmaking, and in the manufacture of glass, enamels and hydrofluoric acid. Fluorite is the main natural resou …   Wiktionary

  • fluorite — fluoritas statusas T sritis chemija apibrėžtis Mineralas. formulė CaF₂ atitikmenys: angl. fluorite rus. плавиковый шпат; флюорит …   Chemijos terminų aiškinamasis žodynas

  • fluorite — fluoritas statusas T sritis fizika atitikmenys: angl. fluorite; fluorspar vok. Fluorit, m; Flußspat, m rus. плавиковый шпат, m; флюорит, m pranc. fluorine, m; spath fluor, m …   Fizikos terminų žodynas


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