Extra large | Material polishability | Filling factor | K | A |
Powdery | No polish, half polish | 0.35-0.40 | 0.0415 | 75 |
Powdery | Polished | 0.25-0.30 | 0.0565 | 35 |
Small block a<60mm | No polish, half polish | 0.25-0.30 | 0.0537 | 45 |
Small block a<60mm | Polished | 0.20-0.25 | 0.0645 | 25 |