lazulite

lazulite
—lazulitic /laz'euh lit"ik, lazh'euh-/, adj.
/laz"euh luyt', lazh"euh-/, n.
an azure-blue mineral, hydrous magnesium iron aluminum phosphate, (FeMg)Al2P2O8(OH)2.
[1800-10; < ML lazul(um) azure, LAPIS LAZULI + -ITE1]

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      phosphate mineral, a basic magnesium and aluminum phosphate [MgAl2 (PO4)2(OH)2], that often occurs as blue, glassy crystals, grains, or masses in granite pegmatites, aluminous metamorphic rocks and quartzites, and quartz veins. It is found in Werfen, Austria; Västarå, Sweden; Mocalno, Calif., U.S.; and Minas Gerais, Brazil.

      Lazulite (from German Lazurstein, “blue stone”) may be distinguished from lapis lazuli by the presence of cleavage planes. Although lazulite is most often opaque or subtranslucent, transparent granular material has been cut en cabochon (with rounded, convex, polished surface) for gems. Iron commonly substitutes for some of the magnesium in the crystal structure; in nature there is a complete chemical variation, called a solid-solution series, between pure lazulite, which contains no iron, and pure scorzalite, which contains no magnesium but is similar to lazulite in physical properties. For detailed physical properties, see phosphate mineral (table).

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Universalium. 2010.

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  • Lazulite — ((Mg,Fe2+)Al2(OH,PO4)2) is a blue, phosphate based mineral containing magnesium, iron, and aluminium phosphate. Lazulite forms one endmember of a solid solution series with the darker iron rich scorzalite.It forms by high grade metamorphism of… …   Wikipedia

  • lazulite — [ lazylit ] n. f. • 1795; lat. médiév. lazulum ♦ Minér. Phosphate naturel de fer, de magnésium et d aluminium, de couleur bleue, utilisé comme pierre fine. ● lazulite nom féminin (latin médiéval lazulum, azur) Phosphate naturel d aluminium et de… …   Encyclopédie Universelle

  • Lazulite — Laz u*lite, n. [From lazuli : cf. F. lazulite, G. lazulith.] (Min.) A mineral of a light indigo blue color, occurring in small masses, or in monoclinic crystals; blue spar. It is a hydrous phosphate of alumina and magnesia. [1913 Webster] …   The Collaborative International Dictionary of English

  • lazulite — s. f. [Mineralogia] Pedra, de um azul ferrete magnífico, que é um silicato de alumínio, sódio e cálcio clorado e sulfatado, do grupo sodalite, mais conhecido por lápis lazúli, empregada em joalharia. (Variante brasileira lazulita.)   ‣ Etimologia …   Dicionário da Língua Portuguesa

  • lazulite — [laz′yə līt΄, lazh′līt΄] n. [Ger lazulith, altered (infl. by ML lazulum, azure + Gr lithos, stone) < earlier lazurstein < ML lazur (see AZURE) + stein, STONE] a hard, glassy, bright blue, monoclinic mineral, (Mg,Fe)Al2 (PO4) 2 (OH) 2, used… …   English World dictionary

  • lazulite — (la zu li t ) s. f. Pierre bleue, opaque, veinée de blanc et pointillée de pyrites ferrugineuses, qui semblent de l or. La lazulite nous vient de la Perse, de la Chine et de la Grande Bretagne. ÉTYMOLOGIE    Voy. lazuli …   Dictionnaire de la Langue Française d'Émile Littré

  • lazulite — noun Etymology: German Lazulith, from Medieval Latin lazulum lapis lazuli Date: 1807 an often crystalline azure blue mineral that is a hydrous phosphate of aluminum, iron, and magnesium …   New Collegiate Dictionary

  • LAZULITE — n. m. Synonyme de Lapis lazuli. Voyez LAPIS …   Dictionnaire de l'Academie Francaise, 8eme edition (1935)

  • lazulite — noun A semi precious gemstone that is a basic phosphate of magnesium, iron and aluminium …   Wiktionary

  • lazulite — la·zu·lì·te s.f. TS mineral. minerale raro di colore azzurro chiaro e lucentezza vitrea, costituito da fosfato basico di alluminio, che cristallizza nel sistema monoclino ed è usato come pietra ornamentale {{line}} {{/line}} DATA: 1819. ETIMO:… …   Dizionario italiano

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