Monzonite is an igneous intrusive rock. It is composed of approximately equal amounts of plagioclase and alkali feldspar, with less than 5% quartz by weight. It may contain minor amounts of hornblende, biotite and other minerals. If quartz constitutes greater than 5%, the rock is termed a quartz monzonite. If the rock has a greater percentage of a...
A granular plutonic rock containing approximately equal amounts of orthoclase and plagioclase and thus, intermediate between syenite and diorite.
intrusive igneous rock that contains abundant and approximately equal amounts of plagioclase and potash feldspar; it also contains subordinate ... [1 related articles]
A granular igneous rock.
a phaneritic igneous rock that consists of nearly equal percentages of alkali-feldspar and plagioclase feldspar and 20-50 percent dark minerals, typically biotite and hornblende. 
any of a group of granular igneous rocks having approximately equal amounts of orthoclase and plagioclase feldspar, intermediate in composition between syenite and diorite.