any of a group of granular igneous rocks having approximately equal amounts of orthoclase and plagioclase feldspar, intermediate in composition between syenite and diorite.
Origin of monzonite
1880–85; < German Monzonit, named after Monzoni, mountain in Tyrol; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a coarse-grained plutonic igneous rock consisting of equal amounts of plagioclase and orthoclase feldspar, with ferromagnesian minerals
Word Origin for monzonite
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
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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