Look at the samples of enstatite. What is the chemical formula for enstatite? Th

Question

Look at the samples of enstatite. What is the chemical formula for enstatite? This variety of enstatite is called bronzite, it contains minor amounts of Fe^2+. which substitutes for . If there was more Fe in the structure, what would be the mineral name? Note the bronze-like submetallic luster along cleavage planes, this is due to surface alteration of enstatite to various fine oxides and/or hydroxides. What would be the luster and color of enstatite if it had not be subject to chemical alteration? Enstatite belongs to what crystal system?

Explanation / Answer

Enstatite chemical formula: MgSiO3 Bronzite : Fe2+ substitutes for Mg2+ Fe rich mineral in this stucture: Ferrosilite (FeSiO3) Colour and luster of Enstatite: Grey to Green and Vitreous luster. Crystal system of Enstatite: Orthorombhic system.

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