Pyrochlore Pyr"o*chlore, n. [Pyro- + Gr. ? pale green.] (Min.) A niobate of calcium, cerium, and other bases, occurring usually in octahedrons of a yellowish or brownish color and resinous luster; -- so called from its becoming grass-green on being subjected to heat under the blowpipe. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Pyrochlore — Infobox mineral name = Pyrochlore category = Oxide mineral boxwidth = boxbgcolor = caption = formula = (Na,Ca)2Nb2O6(OH,F) molweight = color = Brown, yellow brown, reddish brown, orange, black habit = disseminated granular subhedral system =… …   Wikipedia

  • pyrochlore — /puy reuh klawr , klohr /, n. a mineral, chiefly composed of niobates of the cerium metals, occurring in syenites in the form of brown crystals. [1820 30; < G Pyrochlor. See PYRO , CHLOR 1] * * * ▪ mineral       a complex oxide mineral [(Na,… …   Universalium

  • pyrochlore — pirochloras statusas T sritis chemija apibrėžtis Mineralas. formulė (Na,Ca)₂(Nb,Ti,Ta)₂O₆(OH,F,O) atitikmenys: angl. pyrochlore rus. пирохлор …   Chemijos terminų aiškinamasis žodynas

  • pyrochlore — ˈpīrəˌklō(ə)r noun ( s) Etymology: German pyrochlor, from pyr + Greek chlōros greenish yellow more at yellow : a brown or dark reddish mineral NaCaCb2O6F that is isomorphous with microlite and is an oxide and fluoride of sodium, calcium, and… …   Useful english dictionary

  • pyrochlore — noun A mineral whose composition is that of a mixed niobate mostly of sodium, calcium and cerium, (Na,Ca)NbO(OH,F) …   Wiktionary

  • pyrochlore — (pi ro klo r ) s. m. Titanate de chaux engagé dans la syénite de Norwége …   Dictionnaire de la Langue Française d'Émile Littré

  • pyrochlore — py·ro·chlore …   English syllables

  • Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta …   Wikipedia

  • List of minerals (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association (IMA) is the international group that recognises new minerals and new mineral names. However, minerals discovered before 1959 did not… …   Wikipedia

  • Pyrochlor — Chemische Formel Ca2Nb2O7 [1] Mineralklasse Oxide und Hydroxide 4.DH.15 (8. Auflage: I …   Deutsch Wikipedia

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