Question

an igneous rock contains several different minerals. how often do they all crystallize at the same time? choose one: a. under certain conditions b. always c. never

Answer 1

However, not all of these minerals will be crystallized together in the same rock. A mafic magma will begin crystallizing olivine and continue with pyroxenes and calcium rich plagioclase feldspar. Some amphiboles may also crystallize before the melt is used up.

Step-by-step explanation: