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chabazite

[kab-uh-zahyt] /ˈkæb əˌzaɪt/
noun
1.
a zeolite mineral, essentially a hydrated sodium calcium aluminum silicate, occurring usually in red to colorless rhombohedral crystals.
Origin
1795-1805
1795-1805; earlier chabaz(ie) (< French chabasie < Late Greek chabázios, misspelling of chalázios hailstonelike (stone), equivalent to chálaz(a) hail, hailstone + -ios adj. suffix) + -ite1; compare German Chabasit
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for chabazite

chabazite

/ˈkæbəˌzaɪt/
noun
1.
a pink, white, or colourless zeolite mineral consisting of a hydrated silicate of calcium, sodium, potassium, and aluminium in hexagonal crystalline form. Formula: Ca2Al2Si4O12.6H2O
Word Origin
C19: from French chabazie from Late Greek khabazios, erroneous for khalazios stone similar to a hailstone, from Greek khalazios of hail, from khalaza hailstone + -ite1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for chabazite

common hydrated sodium and calcium aluminosilicate mineral, (Ca,Na2)Al2Si4O126H2O, in the zeolite family. Its brittle, glassy, white or flesh-red, rhombohedral crystals often are found in cavities in basalt or andesite, as in Trentino, Italy; Northern Ireland; Melbourne, Australia; and the area near the Bay of Fundy, Nova Scotia. Within the crystals, the atoms of silicon, aluminum, and oxygen are linked in a rigid, cagelike three-dimensional network (rather than in chains or sheets) traversed by open channels occupied by the ions of sodium and calcium and the molecules of water. The presence of aluminum atoms in place of silicon atoms in this structure creates negatively charged sites in the structural framework and gives chabazite its cation-exchange properties (dissolved sodium, potassium, magnesium, and calcium readily replacing each other in the interstices), which are important in water softeners.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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