Si 2 O 6 Composition Enstatite is magnesium silicate. However, it is usually contains some iron replacing some magnesium. In many reference guides, Hypersthene is categorized as a variety of Enstatite, and not as a separate mineral. Usually as disordered aggregates of rectangular crystals. Also occurs as cleavage fragments , as platy groupings, fibrous , and lammelar .
Crystals are partially hollow in some localities.
May also exhibit parting in one direction. Fracture Uneven Tenacity Brittle Other Names Hypersthene can have three connotations. Most often, it refers to an individual mineral, which is midway in the Enstatite- Ferrosillite series . The term may also be used as an iron-rich variety of Enstatite, and it is occasionally used as a synonym for Enstatite and Ferrosillite. The variety Bronzite is used as a minor gemstone.