Sio298.8 % Al2o30.22 % Fe2o30.147 % Tio20.01 % Cao0.32 % Mgo0.10 % K2o0.03 % Na2o0.10 % P.F. 1100º c0.79 % Co20.47 % S0.01 % - specific weight : 2, 25 - apparent density : 1, 70 - hardness : 7.50 ( mohs scale ). Loose in bulk 23-25 container 20ft. Or in big bags 1.1 -1.3 ton each.
