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Which one of the following statements about metamorphic rocks is not correct?

General Ability 2022 NDA General Ability 2022 NDA 2022

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Due to segregation of minerals into wavy bands or platy surfaces, some metamorphic rocks develop foliations.

Where the foliations develop into broad mineral bands, the metamorphic rock is extremely hard.

Where the foliations are moderately thin, the metamorphic rock tends to flake apart.

Rocks that originally were composed of one dominant mineral are often foliated by metamorphism.