Answer
Two minerals typically found in rocks with high silica content:
Sodium
Potassium
Two minerals found in rocks with relatively low silica content:
Iron
Magnesium
Work Step by Step
Refer to the answer above.
Earth: An Introduction to Physical Geology (12th Edition)
by Tarbuck, Edward J.; Lutgens, Frederick K.; Tasa, Dennis G.
Published by
Pearson
ISBN 10:
0134074254
ISBN 13:
978-0-13407-425-2
Chapter 4 - Section 4.2 - Igneous Compositions - Concept Checks - Page 112: 4
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