Levyne

Levyne

Levyne or levynite is a zeolite mineral, i.e. a hydrated silicate mineral. There are two forms of levyne:
*"Levyne-Na", the sodium dominated form (Na2,Ca,K2)Al2Si4O12·6(H2O); and
*"Levyne-Ca" the calcium dominated form (Ca,Na2,K2)Al2Si4O12·6(H2O)

Levyne crystallizes in the Trigonal - Hexagonal Scalenohedral class. It typically occurs as radiating clusters or fibrous masses that are transparent to translucent in colors ranging from white through reddish and yellowish white to gray. It has a specific gravity of 2.09 - 2.16 and a Mohs hardness of 4.0 to 4.5. It has a vitreous luster and perfect cleavage on [1011] . Typical occurrence is as an alteration and vesicle filling mineral in basalts.

It was named for French mineralogist Armand Levy (1794-1841).The calcium variety was first described in 1821 for an occurrence in Dalsnipa, Sandoy, Faroe Islands. The sodium variety was described in 1997 for an occurrence in Chojabaru, Nagasaki Prefecture, Japan

References

* [http://webmineral.com/data/Levyne-Ca.shtml Webmineral - Levyne-Ca]
* [http://webmineral.com/data/Levyne-Na.shtml Webmineral - Levyne-Na]


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  • Levyne — Lev yne (l[e^]v [i^]n), Levynite Lev yn*ite ( [i^]n*[imac]t), n. [From Mr. Levy, an English mineralogist.] (Min.) A whitish, reddish, or yellowish, transparent or translucent mineral, allied to chabazite. [1913 Webster] …   The Collaborative International Dictionary of English

  • levyne — also called  Levynite,         mineral in the zeolite family, similar in composition and structure to chabazite (q.v.). * * * …   Universalium

  • levyne — noun A hydrated silicate mineral found in sodium and calcium dominated forms. Syn: levynite …   Wiktionary

  • levyne — le·vyne …   English syllables

  • levyne — noun see levynite …   Useful english dictionary

  • Levynite — Levyne Lev yne (l[e^]v [i^]n), Levynite Lev yn*ite ( [i^]n*[imac]t), n. [From Mr. Levy, an English mineralogist.] (Min.) A whitish, reddish, or yellowish, transparent or translucent mineral, allied to chabazite. [1913 Webster] …   The Collaborative International Dictionary of English

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