| oxide | mole_wt | cation | ncations | noxygen | cation_wt |
|---|---|---|---|---|---|
| SiO2 | 60.0843 | Si | 1 | 2 | 28.0855 |
| TiO2 | 79.8988 | Ti | 1 | 2 | 47.9 |
| Al2O3 | 101.96128 | Al | 2 | 3 | 26.98154 |
| Fe2O3 | 159.6922 | Fe3 | 2 | 3 | 51.847 |
| Cr2O3 | 151.9902 | Cr | 2 | 3 | 51.996 |
| FeO | 71.8464 | Fe2 | 1 | 1 | 51.847 |
| MnO | 70.9374 | Mn | 1 | 1 | 54.938 |
| MgO | 40.3044 | Mg | 1 | 1 | 24.305 |
| CaO | 56.0794 | Ca | 1 | 1 | 40.08 |
| BaO | 153.3294 | Ba | 1 | 1 | 137.77 |
| Na2O | 61.97894 | Na | 2 | 1 | 22.98977 |
| K2O | 94.196 | K | 2 | 1 | 39.0983 |