Science, Maths & Technology
Diorite
...Open University's Science courses and qualifications Diorite is a coarse-grained intrusive igneous rock. It contains large interlocking, randomly oriented crystals. It is a dark coloured rock, usually medium to dark grey, containing many mafic crystals. Mostly it looks like dark coloured granite. [Diorite] How was it formed? Diorite formed deep within the Earth’s crust...