MgSiO3Orthorhombic
Enstatite
MgSiO3
SilicatesChemical FormulaMgSiO3
Crystal SystemOrthorhombic
Mohs Hardness5.5
Specific Gravity3.2
ColorGray, green, brown, yellow
LusterVitreous to dull
StreakWhite
CleavageTwo directions
FractureUneven
Occurrence
Found in mafic and ultramafic igneous rocks. Common pyroxene in meteorites.