vivianite

vivianite
/viv"ee euh nuyt'/, n.
a secondary mineral, hydrous ferrous phosphate, Fe3(PO4)2·8H2O, occurring in the form of pale blue crystals or powder.
[1815-25; named after J. G. Vivian, 19th-century English mineralogist, who found it; see -ITE1]

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      phosphate mineral, hydrated iron phosphate [Fe3(PO4)2·8H2O], that occurs as colourless (when freshly exposed) or dark-blue (after long exposure), glassy crystals in the weathered zones of phosphate deposits and as concretions in clays (widespread). It also occurs in recent sediments, in lignite and peat, in forest soils, and as the colouring agent in odontolite (bone turquoise). Localities of occurrence include England, Germany, Bolivia, Japan, and Ukraine. It is abundant in New Jersey and Colorado. For detailed physical properties, see phosphate mineral (table).

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Universalium. 2010.

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  • Vivianite — Fe3(PO4)2 middot;8(H2O), hydrated iron phosphate, is a secondary mineral found in a number of geological environments. Usually found as deep blue to deep bluish green prismatic to flattened crystals, most crystals rather small to microscopic,… …   Wikipedia

  • Vivianite — Viv i*an*ite, n. [So called by Werner after the English mineralogist F. G. Vivian.] (Min.) A hydrous phosphate of iron of a blue to green color, growing darker on exposure. It occurs in monoclinic crystals, also fibrous, massive, and earthy.… …   The Collaborative International Dictionary of English

  • vivianite — ● vivianite nom féminin (de J. G. Vivian, nom propre) Phosphate hydraté naturel de fer, monoclinique …   Encyclopédie Universelle

  • vivianite — s. f. [Mineralogia] Fosfato hidratado natural de ferro.   ♦ Grafia no Brasil: vivianita …   Dicionário da Língua Portuguesa

  • vivianite — vivianitas statusas T sritis chemija apibrėžtis Mineralas. formulė Fe₃[PO₄]₂·8H₂O atitikmenys: angl. vivianite rus. вивианит …   Chemijos terminų aiškinamasis žodynas

  • vivianite — noun A blue, green or colourless mineral of monoclinic crystals, Fe(PO) middot;8HO …   Wiktionary

  • vivianite — viv·i·an·ite …   English syllables

  • vivianite — /ˈvɪviənaɪt/ (say viveeuhnuyt) noun a rare, blue, crystalline mineral phosphate of iron, Fe3 (PO4)2.8H2O. {named after JG Vivian, 19th century English mineralogist + ite1} …  

  • vivianite — ˈvivēəˌnīt noun ( s) Etymology: German vivianit, from J. G. Vivian, 19th century English mineralogist + German it ite : a mineral Fe3(PO4)2.8H2O consisting of a hydrous ferrous phosphate that has limited isomorphism with annabergite, erythrite,… …   Useful english dictionary

  • Érythrite — Catégorie VIII : phosphates, arséniates, vanadates[1] Érythrite Bou Azzer Maroc (5.5x4.5 cm ; XX 1.7 cm) …   Wikipédia en Français

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