Epidosite is one of the important type of rocks. If we have to define Epidosite in general, Epidosite is a highly altered epidote and quartz bearing rock which is a type of metasomatite, essentially altered basalt. Epidosite comes under Igneous Rocks. All Igneous Rocks have similar properties and formation process. Along with Epidosite Definition, know more about the History of Epidosite, Etymology of Epidosite in next sections.