Quality and Specification of Bauxite: Certificate No. Date: (SUCOFINDO) Al2O3 : 45 â?? 47 % SiO2 : 15 â?? 16 % Fe2O3 : 16 â?? 18 % L. O. I : 7 â?? 30 % Moisture : 12-15 % Size : 2 â?? 20 mm 100 % Type : Trihydrate Bauxite Origin: Indonesia Quantity: up to 200.000MT per month FOB; LC at sight 100&