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[jey-dahyt] /ˈdʒeɪ daɪt/
a mineral, essentially sodium aluminum silicate, NaAlSi 2 O 6 , usually fibrous, occurring in compact masses, whitish to dark green: a form of jade.
Origin of jadeite
1860-65; jade1 + -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for jadeite
  • jadeite and nephrite are two different types of jade, also, jade is not always green-hued but is often multi-colored.
  • Jade can consist of two different minerals-nephrite and jadeite.
British Dictionary definitions for jadeite


a usually green or white mineral of the clinopyroxene group, found in igneous and metamorphic rocks. It is used as a gemstone (jade). Composition: sodium aluminium silicate. Formula: NaAlSi2O6. Crystal structure: monoclinic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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jadeite in Science
A rare, usually green mineral of the pyroxene group. Jadeite can also occur in white, auburn, buff, or violet varieties. The most highly valued form of jade consists of jadeite. Chemical formula: NaAlSi2O6.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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