nepheline
a feldspathoid mineral, essentially sodium aluminum silicate, NaAlSiO4, occurring in alkali-rich volcanic rocks.
Origin of nepheline
1- Also neph·e·lite [nef-uh-lahyt]. /ˈnɛf əˌlaɪt/.
Words Nearby nepheline
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use nepheline in a sentence
The flows from Kibo include nepheline and leucite basanite lavas rich in soda felspars.
Leucite and nepheline rocks have been found in various parts of the island, especially in the south-west.
The largest of these streams is that from the Niedermendig, which consists of porous masses of nepheline lava.
The nepheline is in small six-sized prisms, and usually cannot be detected with the unaided eye.
This substance may be imperfectly crystallized nepheline, or a peculiar glass which is rich in soda.
British Dictionary definitions for nepheline
nephelite (ˈnɛfɪˌlaɪt)
/ (ˈnɛfɪlɪn, -ˌliːn) /
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) 2 O 4
Origin of nepheline
1Collins 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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