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monzonite

[mon-zuh-nahyt]
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noun
  1. any of a group of granular igneous rocks having approximately equal amounts of orthoclase and plagioclase feldspar, intermediate in composition between syenite and diorite.
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Origin of monzonite

1880–85; < German Monzonit, named after Monzoni, mountain in Tyrol; see -ite1
Related formsmon·zo·nit·ic [mon-zuh-nit-ik] /ˌmɒn zəˈnɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for monzonite

monzonite

noun
  1. a coarse-grained plutonic igneous rock consisting of equal amounts of plagioclase and orthoclase feldspar, with ferromagnesian minerals
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Derived Formsmonzonitic (ˌmɒnzəˈnɪtɪk), adjective

Word Origin

C19: from German, named after Monzoni, Tyrolean mountain where it was found
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

monzonite in Science

monzonite

[mŏn-zōnīt′, mŏnzə-nīt′]
  1. An igneous rock composed chiefly of plagioclase and orthoclase, with small amounts of amphibole, pyroxene, and biotite. Monzonite contains little or no quartz.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.