| Element | wt% | State |
| Na | 0.117 | Na2O |
| Mg | 0.040 | MgO |
| Al | 0.079 | Al2O3 |
| Si | 0.724 | SiO2 |
| P | 0.079 | P2O5 |
| S | 0.050 | SO3 |
| Cl | 0.034 | Cl |
| K | 0.074 | K2O |
| Ca | 0.522 | CaO |
| Ti | 0.053 | TiO2 |
| Cr | 0.094 | Cr |
| Mn | 0.015 | MnO |
| Fe | 1.026 | Fe2O3 |
| Ni | 0.046 | Ni |
| Cu | 0.021 | Cu |
| Zn | 0.311 | Zn |
| Total impurities | 3.3 | (Carbon is 96.7%) |