Rapakivi Granite is one of the important type of rocks. If we have to define Rapakivi Granite in general, Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. Rapakivi Granite comes under Igneous Rocks. All Igneous Rocks have similar properties and formation process. Along with Rapakivi Granite Definition, know more about the History of Rapakivi Granite, Etymology of Rapakivi Granite in next sections.