nephelinite

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neph·e·lin·ite

 (nĕf′ə-lĭ-nīt′)
n.
An igneous rock consisting chiefly of pyroxene and nepheline.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

nephelinite

(ˈnɛfɪlɪˌnaɪt)
n
(Geological Science) a fine-grained basic laval rock consisting of pyroxene and nepheline
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

neph•e•lin•ite

(ˈnɛf ə ləˌnaɪt)

n.
a fine-grained, dark rock of volcanic origin, essentially a basalt containing nepheline but no feldspar and little or no olivine.
[1860–65]
neph`e•li•nit′ic (-ˈnɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nephelinite - an igneous rock consisting of nepheline and pyroxene
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
nepheline, nephelite - a whitish mineral consisting of sodium aluminum silicate or potassium aluminum silicate in crystalline form; used in the manufacture of ceramics and enamels
pyroxene - any of a group of crystalline silicate mineral common in igneous and metamorphic rocks
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References in periodicals archive
A leucocratic, medium-grained rock suspected to be nephelinite was also encountered around Uganga hill.
Contrasting styles of lead-zinc-barium mineralization in the Lower Benue Trough, Southeastern Nigeria/Contraste de estilos de mineralizacion de plomo-zinc-bario en la parte baja de la Formacion Benue Trough, en el sudeste de Nigeria
The erosion has exposed a feeder of olivine nephelinite with remnants of pyroclastic rocks (Cajz, 1992).
The newly discovered neogene maar volcano near the Marianske Lazne, western Bohemia
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