| Items | SiO2 + Al2O3 + Fe2O3 | Moisture content (%) | Loss on ignition (%) | Specific gravity | Average particle size (µm) | Blaine fineness (cm2/g) |
| Measured values | 80.00 | 0.9 | 1.5 | 3.2 | 11.5 | 3200 |