Sample  SiO2  TiO2  Al2O3 Fe2O3 MgO CaO Na2O K2O P2O5 MnO Total
FS-1 56.6 0.67 19.1 6.3 1.3 0.7 1.5 1.9 0.09 0.11 88.3
FS-2 60.7 0.53 15.6 4.1 1.1 1.6 1.9 1.5 0.47 0.06 87.7
FS-3 68.1 0.43 13.5 3.0 0.8 1.1 1.7 2.3 0.09 0.04 91.2
FS-4 66.1 0.44 14.4 3.2 0.8 1.1 1.9 2.2 0.13 0.04 90.4
Table 2: Major oxide composition (mass %) in soil.