nephelinite

Definitions

  • WordNet 3.6
    • n nephelinite an igneous rock consisting of nepheline and pyroxene
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Century Dictionary and Cyclopedia
    • n nephelinite The name given by Rosenbusch to what had previously been generally designated us “nephelin-dolerite.” The difference between this rock and nephelin-basalt is exceedingly slight. See nephelin-basalt.
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Usage

In literature:

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" by Various
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