what type of rock is diorite

Diorite is an intrusive igneous rock with a phaneritic (coarse-grained) texture. It is composed principally of plagioclase feldspar, biotite, hornblende, and sometimes quartz. Diorite has an intermediate chemical composition, between that of mafic gabbro and felsic granite. It is typically found in mountain-building belts on the margins of continents and is associated with convergent plate boundaries. Diorite is known for its "salt and pepper" appearance due to its contrasting mix of black and white mineral grains. It is often used as a decorative stone and in the construction industry for various purposes such as road construction, building stone, and erosion control