| technical properties | |
|---|---|
| bulk-density | 2.65 |
| water absorption | |
| by weight | 0.12% |
| Compressive Strength (MPa) | |
| average dry | 140 |
| average soaked | 104 |
| Flexural strength (MPa) | |
| average dry | 13 |
| average soaked | 12.8 |
| Mineralogy (vol%) | |
| K-feldspar | 40% |
| Quartz | 25% |
| Plagioclase | 15% |
| Biotite | 10% |
| Sericite | 2% |
| Chlorite | 2% |
| Apatite | 2% |
| Opaques | 2% |