A GIFT TO A TRUE FOUNDRYMAN, WHO IS ENTHUSUASTIC TO SUBSTITUTE ZIRCON SAND General Description --Chrome Spinel Sand Appearance and odour Chromite is a black sandy odourless material, which is free flowing when dry. It is insoluble in water and any common organic solvents Typical Specification Chromium as Cr 2 O 3 = 45% min. Typical 46% Fe 2 O 3 = 25% max. Typical 24% Al 2 O 3 = 12% max. SiO 2 < 1% max., Typical = 0.8% MgO = 10% - 12%, Typical 10% TiO 2 = 0.60. Cr : Fe Ratio : 1:55:1. Origin South Africa, India Applications