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norite

[nawr-ahyt]
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noun
  1. a granular igneous rock consisting of a mix of light and dark minerals, the former being calcic plagioclase feldspars, and the latter orthorhombic pyroxenes.

Origin of norite

From the Norwegian word norit, dating back to 1875–80. See Norway, -ite1
Related formsnor·it·ic [naw-rit-ik] /nɔˈrɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for norite

Historical Examples

  • Near the ores there are likely to be granitic rocks, which, like the ores, seem to be segregations from the norite magma.

    The Economic Aspect of Geology

    C. K. Leith

  • In New York the emery deposits are segregations of aluminum and iron oxides in norite (a basic igneous rock).

  • In Canada great portions of the eastern portion of the Dominion are formed of gabbros, norite, anorthosite and allied rock types.


British Dictionary definitions for norite

norite

noun
  1. a variety of gabbro composed mainly of hypersthene and labradorite feldspar

Word Origin

C19: from Norwegian norit, from Norge Norway + -it -ite 1
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

norite in Science

norite

[nôrīt]
  1. See gabbro.
  2. A coarse-grained igneous rock, very similar to gabbro but containing orthopyroxene instead of clinopyroxene.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.