Specimens of Augite Crystals, collected from Africa. Augite is a common rock forming mineral and part of the pyroxene family. It is a silicate mineral and its primary composition includes calcium, magnesium and iron. It is most commonly found in igneous and metamorphic rocks, notably basalt and andesite. Augite is a mafic mineral, meaning it is dark in colour and has a hardness between 5.5 and 6 on Mohs Scale. These crystals are small, measuring approximately 0.5cm each. They come in packs of 5 pieces in a polythene bag with an information label.
