| HF Dose, kg/t | Wt., % | Total SiO2% | Al2O3% | Fe2O3% | Feldspar % |
| 1.30 | 91.87 | 65.63 | 15.92 | 0.118 | 76.42 |
| 2.60 | 75.46 | 68.79 | 17.83 | 0.120 | 85.58 |
| 5.20 | 64.89 | 65.30 | 18.65 | 0.119 | 89.52 |