Which of the Following Would Not True About Igneous Rock

question 64

Multiple Choice

Which of the following would not true about igneous rock chemistry?

• A) Igneous rocks are classified based on the percentage of silica that is in the rock
• B) Felsic igneous rocks contain high percentages of silica
• C) Mafic igneous rocks contain low percentages of silica but high amounts of iron and magnesium
• D) Ultramafic igneous rocks contain very low percentages of iron and magnesium
• E) Intermediate igneous rocks contain intermediate percentages of silica

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