Specific effective activity Aeff=61±19 Bq/kg.
Conclusion: Vendian Stone™ can be used without limitation on the radiation factor in the construction and reconstruction of residential and public buildings.
| SiO2, % | 94.54-98 |
| Al2O3, % | 2.913 |
| TiO2, % | 0.0616 |
| Fe2O3, % | 0.866 |
| MnO, % | <0.01 |
| MgO, % | <0.1 |
| CaO, % | 0.0124 |
| Na2O, % | 0.248 |
| K2O, % | 0.744 |
| P2O5, % | <0.05 |
| Losses on ignition | 0.729 |
| Amount, % | 100 |
| V, % | <0.005 |
| Ba, % | 0.0254 |
| Density, kg/m3 | 2.660-2.700 |
| Dry compressive strength, MPa | 324 |
| Ultimate compressive strength of water-saturated stone, MPa | 296 |
| Heat resistance, °C | 1,770 |
| Porosity, % | 0.14 |
| Decorative value, points | Highly decorative ≥ 32 |
| Mohs hardness | ≤ 8 |
| Polishing, mesh | 170-200 |
Conclusion: Vendian Stone™ can be used as a raw material for road and other construction works.