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Chemical composition of Vg and RHC samples.
| Oxyde | Vg |
RHC |
|---|---|---|
| (%) | ||
| SiO2 | 56,46 | 3,07 |
| Al2O3 | 20,17 | 18,85 |
| Fe2O3 | 6,98 | 17,81 |
| MnO | 0,074 | 0,27 |
| MgO | 1,13 | 2,03 |
| CaO | 1,11 | 21,57 |
| Na2O | 0,84 | 0,11 |
| K2O | 1,95 | 0,38 |
| TiO2 | 1,21 | I.d. |
| P2O5 | 0,12 | 0,31 |
| Loss by ignition | 9,05 | 35,62 |
| Total | 99,08 | 100,02 |
