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Mineralpedia Details for Chabazite-Na

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Chabazite-Na

Chabazite-Na

Previously called "Herschelite" until it was renamed in the late 1990's, and is now named after the Greek chabazios, which was an ancient name of a stone. Chabazite is an uncommon mineral, but a common Zeolite with many widespread localities including notable localities like the type locality on the slopes of Mt. Etna in Sicily, Italy, at Horseshoe Dam and near Bowie in Arizona, at Boron in California, USA, in the Steinberg quarry in Austria, at Hayata in Japan, at Richmond near Melbourne in Australia, and at Tokatoa on the North Island of New Zealand. At the type locality it is found in vugs of lava rocks, and from basalts and underlying borates in Californa, USA. Glassy spherical crytsal aggregates. Part of the Zeolite group.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/chabazite.pdf

Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)

Formula
Na2Ca(Si8Al4)O24ยท12H2
Crystal System
Trigonal 
Crystal Habit
Pseudo Cubic, Druse 
Cleavage
Imperfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white, yellowish, pinkish, reddish white 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Uneven 
Hardness
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Chabazite-Na from Aci Castello, Etna Volcanic Complex, Catania Province, Sicily, Italy

Chabazite-Na
            from Aci Castello, Etna Volcanic Complex, Catania Province, Sicily, Italy

Previously called "Herschelite" until it was renamed in the late 1990's. Forming glassy spherical crytal aggregates to 3mm across on white Phillipsite.

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