Phase composition (XRD)
Description:
Dominant cristalline phase is quartz, furthermore present a small amount microcline and illite.
Chemical composition (XRF)
| Element | Content [%] |
| Na2O | 0,07 |
| MgO | 0,08 |
| Al2O3 | 2,93 |
| SiO2 | 94,3 |
| P2O5 | 0,04 |
| K2O | 2,01 |
| CaO | 0,04 |
| TiO2 | 0,30 |
| Fe2O3 | 0,23 |