Chemical constituent | Composition (%) |
CaO | 44.9 |
K2O | 22.1 |
Fe2O3 | 11.5 |
P2O5 | 10.4 |
TiO2 | 1.80 |
MnO | 1.30 |
ZnO | 0.57 |
Re2O7 | 0.34 |
SO3 | 0.30 |
CuO | 0.27 |