nephelinite

[ nef-uh-luh-nahyt ]

/ ˈnɛf ə ləˌnaɪt /

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noun Petrography.

a fine-grained, dark rock of volcanic origin, essentially a basalt containing nepheline but no feldspar and little or no olivine.

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Origin of nephelinite

First recorded in 1860–65; nepheline + -ite¹

OTHER WORDS FROM nephelinite

neph·e·li·nit·ic

[nef-uh-luh-nit-ik], /ˌnɛf ə ləˈnɪt ɪk/, adjective

Words nearby nephelinite

nepeta, neph-, nephanalysis, Nephele, nepheline, nephelinite, nephelometer, nephew, nepho-, nephogram, nephograph

How to use nephelinite in a sentence

They are chiefly leucite and nepheline rocks, such as leucitite, leucitophyre and nephelinite, but basalt and trachyte also occur.
Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2|Various

British Dictionary definitions for nephelinite

nephelinite

/ (ˈnɛfɪlɪˌnaɪt) /

noun

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