12
QuizMultiple Choice

Rocks and Minerals — Test

Question 12 • Earth and Space Science

Why do mafic minerals such as olivine and pyroxene crystallize before felsic minerals like quartz?

Answer
A
Mafic minerals require higher pressure to form.
B
Felsic minerals contain more iron and magnesium than mafic ones.
C
Mafic minerals are more stable at higher temperatures.
D
Felsic minerals form only in the presence of water.
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