Diorite and andesite are composed of similar amounts of feldspars and ferromagnesian minerals.

Name: Diorite and andesite are composed of similar amounts of feldspars and ferromagnesian minerals.
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Diorite and andesite are both igneous rocks that have similar compositions, including similar amounts of feldspars and ferromagnesian minerals, with diorite being the intrusive (cooled slowly beneath the Earth's surface) counterpart to the extrusive (cooled quickly on the Earth's surface) andesite.

Diorite and Andesite Are Composed of Similar Amounts of Feldspars