Monzodiorite is an
intrusive rock with a composition intermediate between
diorite and
monzonite. It is defined in the QAPF classification as coarse-grained
igneous rock in which
quartz makes up 0% to 5% of the QAPF mineral fraction,
plagioclase makes up 65% to 90% of the total feldspar content, and the plagioclase is sodium-rich (%
Anorthite < 50).
