Oxide % | C1 | C2 | C3 | C4 | C5 | MC5 |
SiO2 | 47.24 | 52.66 | 61.50 | 21.24 | 69.81 | 68.41 |
Al2O3 | 26.20 | 18.05 | 18.59 | 15.66 | 18.62 | 17.53 |
Fe2O3 | 7.39 | 13.80 | 9.00 | 54.50 | 1.07 | 3.88 |
CaO | 0.75 | 0.48 | 0.15 | 0.22 | 0.75 | 0.51 |
MgO | 0.98 | 1.64 | 0.64 | 0.13 | 0.39 | 0.32 |
Na2O | 0.09 | 0.09 | 0.56 | 0.23 | 0.18 | 0.16 |
K2O | 1.01 | 4.72 | 4.56 | 1.40 | 4.42 | 4.56 |
TiO2 | 0.77 | 0.92 | 1.04 | 0.61 | 1.05 | 0.87 |
MnO | 0.02 | 0.07 | 0.01 | 0.13 | 0.01 | 0.01 |
P2O5 | 0.15 | 0.14 | 0.01 | 0.29 | 0.04 | 0.04 |
LOI | 15.40 | 7.43 | 3.94 | 5.60 | 3.66 | 3.71 |
As ppm | 20.0 | 25.1 | 23.0 | 29.1 | 3.0 | n.d. |