chrome concentrate 40-42% grade and 0-4mm size 100% from Turkey Technical specs are as below: Cr2O3 % 41 .94 MgO % 19 .94 SiO2 % 9 .68 Al2O3 % 7 .56 Cr_Fe % 2 .45 S % 0 .005 P % 0 .003