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nepheline

[nef-uh-lin] /ˈnɛf ə lɪn/
noun
1.
a feldspathoid mineral, essentially sodium aluminum silicate, NaAlSiO 4 , occurring in alkali-rich volcanic rocks.
Also, nephelite
[nef-uh-lahyt] /ˈnɛf əˌlaɪt/ (Show IPA)
.
Origin
1805-1815
1805-15; < French néphéline, equivalent to néphél- (< Greek nephélē cloud) + -ine -ine2
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for nepheline
  • The rim consists of an outer belt of light-colored nepheline syenites and an inner belt of phonolites-trachyte.
  • It was among the world's leading producers of olivine and nepheline syenite.
British Dictionary definitions for nepheline

nepheline

/ˈnɛfɪlɪn; -ˌliːn/
noun
1.
a whitish mineral consisting of sodium potassium aluminium silicate in hexagonal crystalline form: used in the manufacture of glass and ceramics. Formula: (Na,K)(AlSi)2O4
Word Origin
C19: from French néphéline, from Greek nephelē cloud, so called because pieces of it become cloudy if dipped in nitric acid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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