No. | Tim1 | Ilm1 | Tim2 | Ilm2 | Tim3 | Ilm3 | Tim4 | Ilm4 |
---|---|---|---|---|---|---|---|---|
Occurrence | Lamellae | Lamellae | Rim/veinlet | Rim/veinlet | ||||
SiO2 | 0.20 | 0.21 | 0.23 | 0.31 | 0.08 | 0.25 | 0.09 | 1.46 |
TiO2 | 14.09 | 38.82 | 12.86 | 37.80 | 11.22 | 44.17 | 11.49 | 40.99 |
Al2O3 | 2.45 | 0.75 | 2.62 | 1.02 | 2.53 | 0.38 | 2.82 | 0.42 |
Cr2O3 | 2.48 | 1.15 | 2.28 | 1.49 | 2.25 | 0.68 | 2.15 | 0.66 |
FeO | 41.23 | 31.47 | 40.39 | 30.55 | 38.86 | 37.45 | 39.65 | 32.45 |
Fe2O3 | 33.35 | 24.26 | 36.15 | 25.79 | 39.15 | 14.79 | 39.09 | 18.44 |
MgO | 0.29 | 0.65 | 0.26 | 0.58 | 0.20 | 0.70 | 0.20 | 0.83 |
MnO | 0.44 | 0.73 | 0.40 | 0.81 | 0.47 | 0.92 | 0.29 | 1.58 |
CaO | 0.06 | 0.03 | 0.01 | 0.03 | n.d | 0.02 | n.d | 0.02 |
V2O3 | 0.50 | n.d | 0.50 | n.d | 0.50 | n.d | 0.50 | n.d |
ZnO | n.d | 0.10 | n.d | 0.10 | n.d | 0.10 | n.d | 0.10 |
Total | 95.09 | 98.20 | 95.70 | 98.48 | 95.26 | 97.95 | 96.28 | 97.15 |
T (°C) | 1032 | 1005 | 848 | 901 | ||||
logfO2 | − 9.05 | − 9.30 | − 12.39 | − 11.15 | ||||
ΔQFMa | + 1.44 | + 1.60 | + 1.26 | + 1.49 |