| Particle size distribution | |
| Size (µm) | Percent finer |
| <10 | 38 |
| <20 | 68 |
| 45 | 99.2 |
| Component | Average (%) |
| SiO2 | 99.6 |
| Al2O3 | 0.25 |
| Fe2O3 | 0.02 |
| LOI | 0.15 |
| Density (g/cm3) | 2.65 |
| pH | 6.5 |