Available 700,000 MT sical Properties: * Appearance- black glassy granules * colour and grain shape : black & granular * of Aqueous solution of Aqueous extract as per ISO ll  I27 = 6.6 - 7.2 * Water soluble chloride content as per ISO II I27- 7 Cl - = II Ppm *Pacific Gravity - 3.5 - 3.8 * Hardness- 6-7Mhos Scale Chemical composition Fe2O3 - 55- 60 % SlO2 - 27- 33% CaO - 1- 3.5 % Al2O3 - 3% Cu - Traces - 1% Free Moisture - 1-2 %