Quartz diorite is an igneous, plutonic (intrusive) rock, of felsic composition, with phaneritic texture. Feldspar is present as plagioclase (typically oligoclase or andesine) with 10% or less potassium feldspar.
Quartz diorite is a type of intrusive igneous rock that is composed of felsic minerals and has a coarse-grained texture. It contains plagioclase feldspar, typically in the form of oligoclase or andesine, with less than 10% potassium feldspar.