MINING ROCKSTAR OF THE WEEK – PYROXENE!!
Pyroxenes are a group of dark-coloured rock-forming minerals found in igneous and metamorphic rocks throughout the world. They form under conditions of high temperature and/or high pressure. Augite, diopside, jadeite and spodumene are four of the best-known members of the pyroxene group; however, the pyroxene group has many other members. Pyroxene minerals are defined by their chemical composition and crystal structure. Their generalized chemical composition is described by the formula and comments below - "Geology.com"