vesuvianite

vesuvianite
/veuh sooh"vee euh nuyt'/, n.
a mineral, chiefly a hydrous silicate of calcium and aluminum, commonly in tetragonal crystals and usually of a brown to green color; idocrase.
[1885-90; VESUVIAN + -ITE1]

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also called  idocrase 
 common silicate mineral that occurs in crystalline limestones near their contacts with igneous rocks, and in beds of marble and calcsilicate granulite that are associated with gneiss and mica schist. Fine glassy crystals coloured yellow, green, or brown have been found in the Ala Valley in the Piedmont, and on Mte. Somma, Italy; the Vilyuy River, Siberia; Christiansand, Nor.; Litchfield, Quebec; and Auburn, Maine, Amity, N.Y., and Franklin, N.J. For chemical formula and detailed physical properties, see silicate mineral (table).

      Transparent crystals of a good green or brown colour are sometimes cut as gemstones. Cut stones resemble diopside or epidote but can be distinguished optically. A compact green variety resembling jade, found at several localities in California, is known as californite. A sky-blue variety, cyprine, contains traces of copper.

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Universalium. 2010.

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Look at other dictionaries:

  • Vesuvianite — Vésuvianite Vésuvianite Catégorie IX : silicates Vésuvianite monocristal (4.2x2.5cm) Sierra de la Cruz Mexique …   Wikipédia en Français

  • Vesuvianite — from the Jeffrey Mine in Asbestos, Quebec General Category Mineral …   Wikipedia

  • vésuvianite — ● vésuvianite nom féminin Synonyme de idocrase. ● vésuvianite (synonymes) nom féminin Synonymes : idocrase ⇒VÉSUVIANITE, subst. fém. MINÉR. Synon. de idocrase. On l a reconnue [l idocrase] pour la première fois comme espèce distincte (...) sur… …   Encyclopédie Universelle

  • Vesuvianite — Ve*su vi*an*ite, n. (Min.) A mineral occurring in tetragonal crystals, and also massive, of a brown to green color, rarely sulphur yellow and blue. It is a silicate of alumina and lime with some iron magnesia, and is common at Vesuvius. Also… …   The Collaborative International Dictionary of English

  • vesuvianite — [və so͞o′vēə nīt΄] n. [< VESUVIAN + ITE1] a usually green or brown, hard, tetragonal mineral, Ca10Mg2Al4 (SiO4) 5 (Si2O7) 2 (OH) 4, usually found in metamorphic limestone; hydrous calcium magnesium aluminum silicate …   English World dictionary

  • Vésuvianite — Pour les articles homonymes, voir Hyacinte (homonymie). Vésuvianite Catégorie IX : silicates[1] …   Wikipédia en Français

  • vesuvianite — vezuvianas statusas T sritis chemija apibrėžtis Mineralas. formulė Ca₁₀(Mg,Fe)₂Al₄[(OH)|(SiO₄)₅|(Si₂O₇)₂] atitikmenys: angl. vesuvianite rus. везувиан …   Chemijos terminų aiškinamasis žodynas

  • vesuvianite jade — a green variety of vesuvianite, used as a gem: not a true jade. Also, vesuvian jade. Also called californite. * * * …   Universalium

  • vesuvianite jade — a green variety of vesuvianite, used as a gem: not a true jade. Also, vesuvian jade. Also called californite …   Useful english dictionary

  • vesuvianite — noun Date: circa 1888 idocrase …   New Collegiate Dictionary

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