Tephrite is one of the important type of rocks. If we have to define Tephrite in general, Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock. Tephrite comes under Igneous Rocks. All Igneous Rocks have similar properties and formation process. Along with Tephrite Definition, know more about the History of Tephrite, Etymology of Tephrite in next sections.