| technical properties | |
|---|---|
| bulk-density | 2.62 |
| water absorption | |
| by weight | 0.30% |
| Compressive Strength (MPa) | |
| average dry | 176 |
| average soaked | 162 |
| Flexural strength (MPa) | |
| average dry | 10.9 |
| average soaked | 9.9 |
| Mineralogy (vol%) | |
| Plagioclase feldspar | 39% |
| Microcline feldspar | 30% |
| Quartz | 26% |
| Biotite mica | 3% |
| Opaque oxide | 1% |
| Muscovite mica and sericite | 1% |