Select from the list below the coarse- grained rock that is composed mainly of quartz and potassium feldspar.
A) basalt
B) diorite
C) andesite
D) granite

Question

Quizplus · Accepted Answer

Granite is a coarse-grained rock made up of mainly quartz and potassium feldspar. Basalt, diorite, and andesite are all fine-grained rocks and do not contain a significant amount of quartz or potassium feldspar.

Select from the List Below the Coarse- Grained Rock That