chabazite

/kab"euh zuyt'/, n.
a zeolite mineral, essentially a hydrated sodium calcium aluminum silicate, occurring usually in red to colorless rhombohedral crystals.
[1795-1805; earlier chabaz(ie) ( < F chabasie < LGk chabázios, misspelling of chalázios hailstonelike (stone), equiv. to chálaz(a) hail, hailstone + -ios adj. suffix) + -ITE1; cf. G Chabasit]

* * *

      common hydrated sodium and calcium aluminosilicate mineral, (Ca,Na2)Al2Si4O12·6H2O, 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.

      Chabazite, one of the dominant zeolites in altered volcanic deposits, is the principal member of a group of zeolite minerals that have very similar modes of occurrence, chemical and physical properties, and internal structures. The group includes gmelinite, erionite, and levyne (levynite). These minerals differ from chabazite and from one another in the geometrical pattern of their three-dimensional framework. For chemical formulas and detailed physical properties, see zeolite (table).

* * *


Universalium. 2010.

Look at other dictionaries:

  • Chabazite-Ca — Catégorie IX : silicates[1] Chabazite Ca Tchéquie …   Wikipédia en Français

  • Chabazite-Na — Chabazite Catégorie IX : silicates[1] Chabazite Na Herschélite Etna Italie …   Wikipédia en Français

  • Chabazite — Catégorie IX : silicates[1] Chabazite Ca Tchéquie …   Wikipédia en Français

  • Chabazite-Ca — Chabazite Orange chabazite rhombs with white heulandite from Nova Scotia General Category Tectosilicate Chemical formula …   Wikipedia

  • Chabazite — is a tectosilicate mineral of the zeolite group with formula: (Ca,Na2,K2,Mg)Al2Si4O12·6H2O. Recognized varieties include Chabazite Ca, Chabazite K, Chabazite Na, and Chabazite Sr depending on the prominence of the indicated cation.Chabazite… …   Wikipedia

  • chabazite — [kab′ə zīt΄] n. [Fr chabazie < Gr, a misspelling of chalazie, voc. of chalazios, a gem resembling a hailstone < chalaza, hailstone: see CHALAZA] a hard, rhombohedral zeolite, CaAl2Si4O12·6H2O, commonly found in basalts …   English World dictionary

  • chabazite — šabazitas statusas T sritis chemija apibrėžtis Mineralas. formulė (Ca,Na₂)[Al₂Si₄O₁₂]·6H₂O atitikmenys: angl. chabazite rus. шабазит …   Chemijos terminų aiškinamasis žodynas

  • chabazite — noun Any of several zeolite minerals that occurs in basaltic rocks …   Wiktionary

  • chabazite — chab·a·zite …   English syllables

  • chabazite — /ˈkæbəzaɪt/ (say kabuhzuyt) noun a zeolite mineral, essentially a hydrated sodium calcium aluminium silicate, occurring commonly in red to colourless crystals that are nearly cubes. {earlier chabazie, from French, misspelling of Greek chalazie… …   Australian English dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.