Dacite is one of the important type of rocks. If we have to define Dacite in general, Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite. Dacite comes under Igneous Rocks. All Igneous Rocks have similar properties and formation process. Along with Dacite Definition, know more about the History of Dacite, Etymology of Dacite in next sections.