Attributes . 12% Silicon Di Oxide (SiO2), 1% Manganese Oxide (MnO), 29% Magnesium Oxide (MgO), 29% Calcium Fluoride (CaF2), 1% Sodium Oxide (Na2O), 18% Aluminum Oxide (Al2O3), 8% Calcium Oxide (CaO), 1% Potassium Oxide (K2O), 1% Metal Alloys . Names