What are the types of metamorphic rocks?

Metamorphic rocks are classified into two major groups. They are foliated rocks and non-foliated rocks.

  • Foliated means the parallel arrangement of certain mineral grains that gives the rock a striped appearance. Example: granite gneiss and schist.
  • Non-foliated metamorphic rocks do not have platy or sheet-like structure. Example: marble and quartzite.

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