Mafic rocks have silica contents of ________ and are mainly composed of ________.
A)under 40%, olivine and pyroxene
B)around 50%, pyroxene and plagioclase feldspar
C)up to 70% quartz and feldspar
D)more than 85%, potassium rich feldspars and micas

Question

Quizplus · Accepted Answer

Mafic rocks typically have silica contents around 50% and are primarily composed of minerals such as pyroxene and plagioclase feldspar.

Mafic Rocks Have Silica Contents of ________ and Are Mainly