Which one of the following statements about metamorphic rocks is <strong>NOT</strong> correct?
- A. Due to segregation of minerals into wavy bands or platy surfaces, some metamorphic rocks develop foliations.
- B. Where the foliations develop into broad mineral bands, the metamorphic rock is extremely hard.
- C. Where the foliations are moderately thin, the metamorphic rock tends to flake apart.
- D. Rocks that originally were composed of one dominant mineral are often foliated by metamorphism. ✓
Correct Answer: D. Rocks that originally were composed of one dominant mineral are often foliated by metamorphism.
Explanation
Metamorphic rocks composed of a single dominant mineral, such as quartzite or marble, generally do not show foliation because they lack the platy or elongated minerals required to form it.
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