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4 votes
Igneous rocks that contain many dark silicate minerals, and that also are rich in magnesium and iron, have a composition that is ____.

A. ultramafic
B. granitic
C. basaltic
D. andesitic

2 Answers

3 votes
Basaltic

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2 votes
the answer is basaltic. hope this helps
answered
User Fred Grott
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