| Type of rock Name Sample | Low Magnesian-basalts (LMg-B) | ||||||||
| Basalt |
| Hawaiite |
|
| Mugearite |
|
|
| |
| BAF 18 |
| BAF 2 |
|
| BAF 37 |
|
|
| |
| n˚ | 120/1 | 122/1 | 96/1 | 102/1 | 108/1 | 59/1 | 63/1 | 69/1 | 72/1 |
| Position | µ | µ | µ | µ | µ | ϕ | ϕ | ϕ | ϕ |
| SiO2 | 47.98 | 47.18 | 50.20 | 49.53 | 50.37 | 50.91 | 49.56 | 51.38 | 50.07 |
| TiO2 | 2.79 | 3.25 | 1.83 | 1.93 | 1.67 | 0.53 | 1.07 | 0.61 | 0.99 |
| Al2O3 | 4.04 | 4.89 | 2.28 | 2.53 | 2.25 | 0.97 | 2.55 | 0.99 | 1.60 |
| Cr2O3 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| FeO | 9.73 | 9.89 | 10.88 | 10.93 | 10.75 | 13.95 | 13.43 | 13.76 | 14.16 |
| MnO | 0.23 | 0.24 | 0.34 | 0.37 | 0.33 | 0.50 | 0.34 | 0.50 | 0.49 |
| MgO | 12.85 | 12.67 | 12.42 | 12.53 | 11.94 | 10.77 | 10.17 | 11.14 | 10.54 |
| CaO | 21.39 | 21.17 | 21.72 | 21.20 | 21.96 | 21.81 | 21.84 | 21.56 | 21.47 |
| Na2O | 0.56 | 0.71 | 0.64 | 0.60 | 0.69 | 0.58 | 0.94 | 0.53 | 0.72 |
| K2O | 0.00 | 0.01 | 0.02 | 0.00 | 0.02 | 0.00 | 0.00 | 0.01 | 0.00 |
| P2O5 | 0.10 | 0.18 | 0.01 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.04 |
| NiO | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 |
| Total | 99.68 | 100.20 | 100.33 | 99.61 | 100.02 | 100.02 | 99.90 | 100.49 | 100.07 |
| Formula based on 4 cations and 6 oxygen atoms | |||||||||
| Si | 1.81 | 1.77 | 1.88 | 1.87 | 1.90 | 1.94 | 1.88 | 1.94 | 1.91 |
| Al iv | 0.18 | 0.22 | 0.10 | 0.11 | 0.10 | 0.04 | 0.11 | 0.04 | 0.07 |
| Al vi | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Alt | 0.18 | 0.22 | 0.10 | 0.11 | 0.10 | 0.04 | 0.11 | 0.04 | 0.07 |
| Ti | 0.08 | 0.09 | 0.05 | 0.05 | 0.05 | 0.02 | 0.03 | 0.02 | 0.03 |
| Cr | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Fe3+ | 0.09 | 0.12 | 0.08 | 0.08 | 0.06 | 0.09 | 0.13 | 0.07 | 0.11 |
| Fe2+ | 0.21 | 0.19 | 0.26 | 0.26 | 0.27 | 0.35 | 0.30 | 0.36 | 0.34 |
| Mn | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.02 | 0.01 | 0.02 | 0.02 |
| Mg | 0.72 | 0.71 | 0.69 | 0.71 | 0.67 | 0.61 | 0.58 | 0.63 | 0.60 |
| Ca | 0.86 | 0.85 | 0.87 | 0.86 | 0.89 | 0.89 | 0.89 | 0.87 | 0.88 |
| Na | 0.04 | 0.05 | 0.05 | 0.04 | 0.05 | 0.04 | 0.07 | 0.04 | 0.05 |
| K | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Total | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 |
| Mg# | 77.22 | 78.82 | 72.66 | 72.88 | 70.95 | 63.56 | 65.81 | 63.35 | 63.86 |
| Wo | 49.24 | 49.74 | 49.37 | 51.94 | 50.22 | 46.78 | 45.02 | 44.39 | 43.64 |
| En | 37.82 | 37.71 | 37.63 | 33.16 | 36.47 | 37.66 | 40.25 | 39.96 | 40.69 |
| Fs | 12.93 | 12.54 | 13.00 | 14.90 | 13.31 | 15.56 | 14.73 | 15.65 | 15.67 |