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The chemical composition of PDK, and MK.
| Parameter | Amount (weight %) | |
|---|---|---|
| PDK | MK | |
| SiO2 (quartz) | 21.2 | 16.3 |
| SiO2 (amorphous) | 63.3 | 41.7 |
| Al2O3 | 6.2 | 35 |
| Fe2O3 | 0.6 | 1.2 |
| TiO2 | 2.8 | 2.6 |
| MgO | 0.11 | 0.15 |
| CaO | 0.13 | 0.51 |
| Na2O | 0.07 | 0.13 |
| K2O | 0.05 | 0.07 |
| SO3 | 1.2 | 0.55 |
| Cl- | 0.06 | 0.11 |
| LOI | 3.56 | 1.0 |
| Total | 99.28 | 99.32 |
