Phase composition (XRD)
Description:
Dominant cristalline phase is quartz, furthermore present a small amount microcline.
Chemical composition (XRF)
| Element | Content [%] |
| Na2O | 0,68 |
| MgO | 0,53 |
| Al2O3 | 0,56 |
| SiO2 | 95,5 |
| P2O5 | 0,06 |
| SO3 | 0,03 |
| K2O | 1,31 |
| CaO | 0,08 |
| TiO2 | 0,11 |
| Fe2O3 | 1,14 |