Lazulite

Lazulite

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 high silica quartz rich rocks and in pegmatites. It is considered a semi-precious gemstone. It is often confused with lazurite, lapis lazuli or azurite.

Lazulite crystallizes in the monoclinic system with prismatic crystals, although it is usually massive in form. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.0 to 3.1. It is infusible and insoluble.

It is found in Salzburg, Austria; Zermatt, Switzerland; Minas Gerias, Brazil; Lincoln County, Georgia; Inyo County, California; the Yukon in Canada, and elsewhere.

It was first described in 1795 for deposits in Austria. Its name comes from the Arabic for heaven.

References

* Hurlbut, Cornelius S.; Klein, Cornelius, 1985, "Manual of Mineralogy", 20th ed., Wiley, ISBN 0-471-80580-7
* [http://www.mindat.org/min-2356.html The Mineral Database]
* [http://mineral.galleries.com/minerals/phosphat/lazulite/lazulite.htm Lazulite - Mineral Galleries]
* [http://www.minerals-n-more.com/Lazulite_Info.html Minerals-n-More]
* [http://webmineral.com/data/Lazulite.shtml Webmineral data]
* [http://www.mindat.org/min-2356.html Lazulite localities] , from Mindat


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  • 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 — 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] * * * ▪ mineral       phosphate… …   Universalium

  • 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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