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Lazurite is a product of contact metamorphism of limestone and is typically associated with calcite, pyrite, diopside, humite, forsterite, hauyne and muscovite. [ 2 ] Other blue minerals, such as the carbonate mineral, azurite , and the phosphate mineral, lazulite , may be confused with lazurite, but are easily distinguished with careful ...
Azure spar, sometimes azur-spar (German: Lazur spath, Blau spath) is a trivial and commercial, partly obsolete name for several of the most famous bright blue or blue-colored minerals, which also have similar names, most notably for lazurite and azurite, [1]: 14 and also for the less commonly used lazulite.
Lapis lazuli (UK: / ˌ l æ p ɪ s ˈ l æ z (j) ʊ l i, ˈ l æ ʒ ʊ-,-ˌ l i /; US: / ˈ l æ z (j) ə l i, ˈ l æ ʒ ə-,-ˌ l i /), or lapis for short, is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color.
Azurite is used occasionally as beads and as jewelry, and also as an ornamental stone. [21] However, its softness and tendency to lose its deep blue color as it weathers leaves it with fewer uses. [22] Heating destroys azurite easily, so all mounting of azurite specimens must be done at room temperature.
lazurite Na 3 Ca(Si 3 Al 3)O 12 S; tsaregorodtsevite N(CH 3) 4 Si 4 (SiAl)O 12; tugtupite Na 4 BeAlSi 4 O 12 Cl; vladimirivanovite Na Na 6 Ca 2 [Al 6 Si 6 O 24](SO 4,S 3,S 2,Cl) 2 ·H 2 O; All these minerals are feldspathoids. Haüyne forms a solid solution with nosean and with sodalite. Complete solid solution exists between synthetic nosean ...
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It may be confused with lazurite, lapis lazuli or azurite. The type locality is in Freßnitzgraben in Krieglach, it's also found in Salzburg, Austria; Zermatt, Switzerland; Minas Gerais, Brazil; Lincoln County, Georgia; Inyo County, California; the Yukon in Canada; and elsewhere. It was first described in 1795 for deposits in Styria, Austria. [3]
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