wt% | ol (n = 15) | s.d.a | cpx (n = 15) | s.d. | grt (n = 15) | s.d. |
---|---|---|---|---|---|---|
SiO2 | 41.6 | 0.3 | 56.9 | 0.3 | 44.6 | 0.5 |
TiO2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 |
Al2O3 | 0.2 | 0.0 | 2.5 | 0.1 | 20.8 | 0.7 |
Cr2O3 | 0.1 | 0.1 | 0.3 | 0.1 | 1.8 | 0.8 |
FeO | 10.2 | 0.4 | 5.2 | 0.2 | 6.6 | 0.3 |
MnO | 0.1 | 0.0 | 0.1 | 0.0 | 0.2 | 0.0 |
MgO | 48.9 | 0.4 | 25.2 | 0.9 | 22.6 | 0.4 |
CaO | 0.3 | 0.1 | 9.4 | 1.0 | 4.8 | 0.4 |
Na2O | 0.1 | 0.0 | 0.9 | 0.0 | 0.1 | 0.0 |
K2O | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 |
P2O5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 |
Total | 101.6 | 0.6 | 100.6 | 0.4 | 101.6 | 0.5 |
Mg# | 89.5 | Â | 89.6 | Â | 86.0 | Â |