| Analysis | Test Results (%) |
| Na2O | 0.5 |
| MgO | 0.9 |
| Al2O3 | 10.7 |
| SiO2 | 69.7 |
| P2O5 | <0.1 |
| K2O | 3.9 |
| CaO | 2.6 |
| TiO2 | 0.1 |
| MnO | <0.1 |
| Fe2O3 | 1.2 |
| A. Za. (1050˚C) | 9.15 |