| Species name | % | Oxide composition | |||||||||||
| SiO2 | Al2O3 | CaO | MgO | FeO | Fе2O3 | ||||||||
| % | Wt | % | Wt | % | Wt | % | Wt | % | Wt | % | Wt | ||
| Basalt | 14 | 44.0 | 83 | 14.8 | 83 | 8.33 | 83 | 6.33 | 83 | 5.33 | 83 | 5.62 | 83 |
| Marble |
|
|
|
|
| 31.24 | 19 | 20.87 | 19 |
|
|
|
|
| Chromium iron ore |
| 6.5 | 3 | 15.5 | 3 | 1.5 | 3 | 15.5 | 3 | 16.0 | 3 | 8.0 | 3 |
| Calculated chemical composition | 3.0 | 41.02 |
| 12.94 |
| 11.66 |
| 8.4 |
| 5.7 |
| 5.7 |
|