Chabazite

chabazite

[′kab·ə‚zīt]

(mineralogy)

CaAl₂Si₄O₁₂·6H₂O A white to yellow or red member of the zeolite group occurring in glassy rhombohedral crystals; hardness is 4-5 on Mohs scale, and specific gravity is 2.08-2.16.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Chabazite

 

a mineral of the zeolite group, with the chemical composition (Ca, Na₂, K₂)Al₂Si_3–8O_10–20(5.4–9.4)H₂O and ad mixtures of Ba or Sr. Chabazite crystallizes in the trigonal system, forming rhombohedral crystals up to several centimeters in size. It also occurs in the form of crystalline aggregates and massive cryptocrystalline crusts. Chabazite is white or brownish, with a hardness of 4–5 on Mohs’ scale and a density of 2,080–2,160 kg/m³. It is formed in the pores and amygdules of effusive rocks and replaces volcanic tuff when acted upon by solutions of varied origin. It also occurs in hydrothermal veins and hot springs beds. Commercial deposits of chabazite are located in Bowie, Ariz. Structural analogues of chabazite have been synthesized. (See alsoZEOLITES.)

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.