celsian

celsian

      an uncommon feldspar mineral, barium aluminosilicate (BaAl2Si2O8), that occurs as hard, light-coloured, glassy masses and crystals in association with manganese deposits in contact zones, as at Jakobsberg, Swed.; Tochigi prefecture, Japan; Rhiw, Wales; near the Omuramba Otjosondjou (dry riverbed), Namibia; and near Incline, Calif., U.S. It may be regarded as the barium equivalent of another feldspar, anorthite, or calcium aluminosilicate (CaAl2Si2O8). hyalophane is a potassium feldspar containing 5 to 30 percent celsian; it occurs with celsian in contact zones. For detailed physical properties of celsian and hyalophane, see feldspar (table).

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Universalium. 2010.

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  • Celsian — is an uncommon feldspar mineral, barium aluminosilicate, BaAl2Si2O8. The mineral occurs in contact metamorphic rocks with significant barium content. Its crystal system is monoclinic, and it is white, yellow, or transparent in appearance. In pure …   Wikipedia

  • Celsian — Verwachsung aus Celsian (durchsichtig, grau) mit Sanborit und Quarz (jeweils weiß) aus Incline (Mariposa County), Kalifornien, USA Chemische Formel Ba[Al2Si2O8] Mineralk …   Deutsch Wikipedia

  • Celsian —   [nach A. Celsius] der, s, Mineral aus der Gruppe der Feldspäte …   Universal-Lexikon

  • Celsian — Feldspath Feldspath Catégorie IX : silicates Feldspath plagioclase …   Wikipédia en Français

  • celsian — celzianas statusas T sritis chemija apibrėžtis Mineralas. formulė Ba[Al₂Si₂O₈] atitikmenys: angl. barium feldspar; celsian rus. полевой бариевый шпат; цельзиан ryšiai: sinonimas – bario feldšpatas …   Chemijos terminų aiškinamasis žodynas

  • celsian — noun An uncommon monoclinic feldspar mineral, barium aluminosilicate, found in contact metamorphic rocks with significant barium content …   Wiktionary

  • celsian — cel·si·an …   English syllables

  • celsian — ˈselsēˌan noun ( s) Etymology: probably from Anders Celsius + English an : a mineral BaAl2Si2O8 that consists of a barium feldspar and is isomorphous with orthoclase …   Useful english dictionary

  • Celsiane — Catégorie IX : silicates[1] Celsiane (Plage grise) Mariposa County, Californie …   Wikipédia en Français

  • Hyalophan — Hyalophankristall auf Muttergestein aus Busovaca, Bosnien Chemische Formel (K,Ba)(Al,Si)4O8[1] Mineralklasse Silicate und Ger …   Deutsch Wikipedia

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