Norite is one of the important type of rocks. If we have to define Norite in general, Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. Norite comes under Igneous Rocks. All Igneous Rocks have similar properties and formation process. Along with Norite Definition, know more about the History of Norite, Etymology of Norite in next sections.