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sodalite

[sohd-l-ahyt] /ˈsoʊd lˌaɪt/
noun
1.
a mineral, sodium aluminum silicate, Na 4 Al 3 Si 3 O 1 2 Cl, occurring massive and in crystals, usually blue in color and found in certain alkali-rich igneous rocks.
Origin of sodalite
1800-1810
First recorded in 1800-10; soda + -lite
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for sodalite

sodalite

/ˈsəʊdəˌlaɪt/
noun
1.
a blue, grey, yellow, or colourless mineral consisting of sodium aluminium silicate and sodium chloride in cubic crystalline form. It occurs in basic igneous rocks. Formula: Na4Al3Si3O12Cl
Word Origin
C19: from soda + -lite
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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Word Value for sodalite

9
10
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