levyne series
Sign in to saveAlso known as levyne-(metal) zeolite series, lévyne series, levyne
Lévyne or lévynite is a group of zeolite minerals, i.e. hydrated silicate minerals. There are two members of the group: Lévyne-Na, the sodium-dominant species , and Lévyne-Ca the calcium-dominant species
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Lévyne or lévynite is a group of zeolite minerals, i.e. hydrated silicate minerals. There are two members of the group: Lévyne-Na, the sodium-dominant species , and Lévyne-Ca the calcium-dominant species
Lévyne crystallizes in the trigonal crystal system and belongs to the hexagonal scalenohedral crystal 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.
Excerpted from Wikipedia’s “levyne series” article, available under the CC BY-SA 4.0 licence.