Pyroxenes have a special formula! Most of them are made of silicon and oxygen, which form a cool chain structure called inosilicate. 🧪
In addition to Si and O, they usually contain metal atoms like calcium (Ca), magnesium (Mg), and iron (Fe). For example, one common pyroxene is called augite, which often has the composition (Ca, Mg, Fe)Si₂O₆. Each pyroxene can have slightly different metals in it, giving it unique properties! Scientists study these compositions to understand how rocks form deep in the Earth. 🌋