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nephelinite

[nef-uh-luh-nahyt] /ˈnɛf ə ləˌnaɪt/
noun, Petrography
1.
a fine-grained, dark rock of volcanic origin, essentially a basalt containing nepheline but no feldspar and little or no olivine.
Origin of nephelinite
1860-1865
1860-65; nepheline + -ite1
Related forms
nephelinitic
[nef-uh-luh-nit-ik] /ˌnɛf ə ləˈnɪt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for nephelinite

nephelinite

/ˈnɛfɪlɪˌnaɪt/
noun
1.
a fine-grained basic laval rock consisting of pyroxene and nepheline
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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