1. Slate
   Slate is a fine-grained, homogeneous, sedimentary rock composed
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2. Metamorphic rock
   Metamorphic rock is the result of the transformation of a pre-existing rock type
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3. Schist
   The schists form a group of medium-grade metamorphic rocks..
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4. Gneiss
   Gneiss is a common and widely distributed type of rock formed by high grade regional metamorphic..
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5. Hornfels
   Hornfels is the group designation for a series of rocks
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6. List of metamorphic rocks
   List of metamorphic rocks
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7. Granulite
   Granulite is a name used by petrographers to designate two distinct classes of rocks
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