| Oxides (%) | FCBW | RHA |
| SiO2 | 60.98 | 93.2 |
| Fe2O3 | 9.635 | 0.196 |
| K2O | 0.932 | 3.045 |
| MgO | 0.323 | 0.278 |
| Al2O3 | 22.5 | 0.584 |
| CaO | 0.104 | 0.565 |
| TiO2 | 1.728 | 0.033 |
| P2O5 | 0.331 | 0.498 |
| MnO | 0.138 | 0.129 |
| ZnO | 0.019 | 0.0085 |
| Rb2O | 0.0044 | 0.0131 |
| CuO | 0.008 | 0.005 |
| Na2O | - | 0.0829 |
| NiO | 0.0106 | - |
| Cr2O3 | 0.0251 | - |
| SrO | 0.0049 | - |
| V2O5 | 0.0398 | - |
| ZrO2 | 0.06185 | - |
| SO3 | - | 0.0844 |
| Cl | - | 0.0733 |
| Br | - | 0.0034 |
| LOI | 3.1 | 1.2 |