Enstatite is a common and widespread mineral with a relative hardness of six. It is found in mafic plutonic and volcanic rocks and often in both metallic and stony meteorites. It is a silicate of magnesium and iron and has the formulae Mg2Si2O6. Enstatite has various uses depending upon the quality of its crystals, and is used as a gemstone and for lining ovens, due to its very high melting point. Research Enstatite