a dark-colored, intrusive igneous rock containing orthoclase and plagioclase in nearly equal quantities, a small amount of quartz, and some biotite
Origin of monzoniteGerman monzonit, after Mount Monzoni (in Tyrol), where it occurs
An igneous rock composed chiefly of plagioclase feldspar and orthoclase, with small amounts of other minerals.
Origin of monzoniteFrench after Mount Monzoni in northeast Italy
From Monzoni in the Italian Tyrol