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Home » Rocks » Metamorphic Rocks » Phyllite


What is Phyllite?

Phyllite is a foliate metamorphic rock that is made up mainly of very fine-grained mica. The surface of phyllite is typically lustrous and sometimes wrinkled. It is intermediate in grade between slate and schist.

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Phyllite: The specimen shown is about two inches (five centimeters) across.

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