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Silica - SiO2 - 97.2 Iron - Fe2O3 - 0.36 Aluminium - Al2o3 - 0.52 Calcium - CaO - 0.76 Magnesium - MgO - 0.25 Sodium - Na2O - 0.1 Potassium - K2O - 0.14 Sulphate - SO3 - 0.11 Chloride - CI - 0.01 Loss on ig - LOI - 0.22 Moisture - 0.1