HELLO I HAV FOR SALLE SIO2 STONES 64% 74% 84% 93% SILIKAT Fe SiO2 MgO Al2O3 Ni Co CaO Cr2O3 MnO Fe Si Mg Al Ni Co Ca Cr Mn (%) (%) (%) (%) (%) (%) (%) (%) (%) X-1 8.237 74.474 4.451 trace 0.442 0.03 0.03 0.441 0.063X-2 6.277 84.339 trace trace 0.273 0.022 0.002 0.305 0.077