GYSUM - high quality from OMAN - direct from Mine hemistry: Physical Parameters: CaSo42H2O : 91.36 % Size: 0-50mm : 100% CaO : 32.52% Quantity available per shipment: 100,000 MT MgO : 1.41% Rate of Loading: 12000 Mt PWWD at Port SiO2 : 0.50% Al2O3 : 0.04% Fe2O3 : 0.02% SO3 : 43.15% NaCl ( Soluble Chlorides) : 0.011% Combined Water ; 19.12% Moisture : 0.05% Ph ; 7.9