| PY01 | PY02 | PY03 | PY05 | PY06 | PY08 | PY09 | PY11 | PY16 | |
|---|---|---|---|---|---|---|---|---|---|
| Al2O3 | 20 | 19.5 | 19.26 | 27.67 | 29.57 | 26.7 | 19.21 | 14.1 | 15.81 |
| SiO2 | — | 45.5 | 46.33 | 42.13 | 41.59 | 43.5 | 49.22 | 49.62 | 53.02 |
| CaO | — | 14.3 | 11.7 | 8.31 | 7.01 | 11.4 | 18.68 | 21.08 | 18.22 |
| MgO | — | 7 | 2.23 | 0.42 | 0.45 | 0.2 | 4.17 | 6.46 | 3.28 |
| K2O | — | 4.13 | 3.13 | 5.67 | 4.38 | 4.3 | 4.85 | — | 2.43 |
| Na2O | — | 2.14 | 2.14 | 13.89 | 13.78 | 7.1 | 1.39 | — | 2.05 |
| BaO | 5 | 8.86 | 10.42 | — | 0.42 | — | 1.47 | — | 3.86 |
| ZnO | — | — | 3.29 | — | — | — | — | — | — |
| ZrO | — | — | — | — | 2.07 | 5.9 | — | — | — |
| B2O3 | — | — | — | — | — | — | — | — | — |