A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety.
the pyroxene silicate highest in magnesium content and a particular Classification of meteorite.
(en' ste tite) - A mineral of the pyroxene group of silicates containing magnesium and no iron - MgSiO3. A class of meteorite.