| technical properties | |
|---|---|
| bulk-density | 2.63 |
| water absorption | |
| by weight | 0.23% |
| by volume | 0.60% |
| schmidt hammer hardness | |
| parallel to foliation | 68 |
| perpendicular to foliation | 69 |
| Compressive Strength (MPa) | |
| average dry | 133 |
| average soaked | 121 |
| Flexural strength (MPa) | |
| parallel to foliation | |
| average dry | 12.8 |
| average soaked | 12.3 |
| perpendicular to foliation | |
| average dry | 11.4 |
| average soaked | 10.9 |
| Mineralogy (vol%) | |
| K-feldspar | 52% |
| Quartz | 35% |
| Plagioclase | 10% |
| Hornblende | 2% |
| Biotite | 1% |