|
| E1 | E1 | E1 |
| SiO2 (wt%) | 47.19 | 47.67 | 47.15 |
| TiO2 | 0.00 | 0.00 | 0.02 |
| Al2O3 | 0.08 | 0.15 | 0.18 |
| FeO* | 29.34 | 29.66 | 28.88 |
| MnO | 1.45 | 1.49 | 1.44 |
| MgO | 0.78 | 0.87 | 0.87 |
| CaO | 18.64 | 18.12 | 18.82 |
| Na2O | 1.23 | 1.10 | 0.93 |
| Total | 98.73 | 99.07 | 98.27 |
| Wo (%) | 46.02 | 43.77 | 45.35 |
| En | 3.04 | 3.26 | 3.26 |
| Fs | 50.93 | 52.97 | 51.39 |
| Q | 1.706 | 1.742 | 1.765 |
| J | 0.198 | 0.177 | 0.150 |