Description | Augite is an important rock-forming mineral in many igneous rocks, especially in gabbros and basalts. Augite is a member of the pyroxene series, with a chemical formula of (Ca,Na)(Mg,Fe,Al)(Al,Si)2O6. Augite comes from the Greek auge- meaning “luster”. Augite is very common and can be found worldwide. This particular speciman is about 5 cm. |