Metapelite is one of the important type of rocks. If we have to define Metapelite in general, Metapelite is an old and currently not widely used field geological term for a clay rich fine-grained clastic sediment or sedimentary rock, i.e. mud or a mudstone. Metapelite comes under Metamorphic Rocks. All Metamorphic Rocks have similar properties and formation process. Along with Metapelite Definition, know more about the History of Metapelite, Etymology of Metapelite in next sections.