fluorapatite

/floor ap"euh tuyt', flawr-, flohr-/, n.
a crystalline mineral, Ca5(PO4)3F, formed from hydroxyapatite in the presence of fluoride, that has a hardening effect on bones and teeth.
[1880-85; < G Fluorapatit; see FLUOR-, APATITE]

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      common phosphate mineral, a calcium fluoride phosphate, Ca5(PO4)3F. It occurs as minute, often green, glassy crystals in many igneous rocks, and also in magnetite deposits, high-temperature hydrothermal veins, and metamorphic rocks; it also occurs as collophane in marine deposits. For detailed physical properties, see phosphate mineral (table).

      The fluoride ion is often replaced in the crystal structure by chloride or a hydroxide group; in nature there are complete chemical variations, called solid-solution (solid solution) series, between fluorapatite and chlorapatite and between fluorapatite and hydroxylapatite. Manganese can replace up to 10 percent of the calcium in fluorapatite derived from granite pegmatites.

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Universalium. 2010.

Look at other dictionaries:

  • Fluorapatite — Infobox mineral name = Fluorapatite category = Phosphate mineral boxwidth = boxbgcolor = imagesize = caption = formula = Ca5(PO4)3F molweight = color = Sea green, violet, purple, blue, pink, yellow, brown, white, colorless, may be zoned habit =… …   Wikipedia

  • fluorapatite — fluorapatitas statusas T sritis chemija apibrėžtis Mineralas. formulė Ca₅(PO₄)₃F atitikmenys: angl. fluorapatite rus. фторапатит …   Chemijos terminų aiškinamasis žodynas

  • fluorapatite — noun A calcium halophosphate mineral, in which fluoride replaces the hydroxide of apatite, that is mined as a phosphate ore, and occurs in the enamel of teeth …   Wiktionary

  • fluorapatite — A naturally occurring fluorophosphate of calcium …   Medical dictionary

  • fluorapatite —    A cave mineral Ca5(PO4)3F [11] …   Lexicon of Cave and Karst Terminology

  • fluorapatite — flu·or·apatite …   English syllables

  • fluorapatite — noun a form of apatite in which fluorine predominates over chlorine • Hypernyms: ↑apatite • Substance Meronyms: ↑fluorine, ↑F, ↑atomic number 9 * * * flu̇(ə)ˈr, flōr, flȯˈr+ noun Etymology …   Useful english dictionary

  • carbonate-fluorapatite —    A cave mineral Ca5(PO4,CO3)3F [11] …   Lexicon of Cave and Karst Terminology

  • Apatite — Catégorie VIII : phosphates, arséniates, vanadates[1] Apatite Québec (Xl 32cm) …   Wikipédia en Français

  • Fluorapatit — (ehemals Apatit (CaF)) Doppelender Kristall in Calcit aus Quebec, Kanada Chemische Formel Ca5[F|(PO4)3][1] Mineralklass …   Deutsch Wikipedia

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