| Size fraction (µm) | High-Yield Product + Middling | Low-Yield Product + Middling | ||
| Grade (SiO2%) | Recovery (%) | Grade (SiO2%) | Recovery (%) | |
| All sizes | 99.20 | 98.19 | 99.10 | 90.62 |
| +125 | 99.57 | 94.80 | 99.51 | 86.49 |
| 500 - 125 | 99.64 | 70.87 | 99.56 | 65.68 |