Fig. 6

(a) The relation between olivine content and MgO/SiO2 (Wt.%) ratio for of the serpentinite rock. (b) variation of SiO2vs. FeO*+MgO for the serpentinite rocks after (Coleman, 197750). (c) AFM ternary diagram for serpentinite rocks after (Coleman, 197750). (d) MgO-CaO-Al2O3 ternary diagram for serpentinite rocks after (Coleman, 197750). (E) Al2O3 vs. CaO distribution fields for the studied serpentinites after (Aumento and Laubat, 197151).