Anthracite is one of the important type of rocks. If we have to define Anthracite in general, Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. Anthracite comes under Metamorphic Rocks. All Metamorphic Rocks have similar properties and formation process. Along with Anthracite Definition, know more about the History of Anthracite, Etymology of Anthracite in next sections.