Table T8. Modeling of fractional crystallization.
Solid fraction
Temperature (°C)
Major element oxide (wt%)
Density
(g/cm3)
Liquid
(Mg#)
Augite
(Mg#)
Plagioclase An
(mol%)
Olivine Fo
(mol%)
SiO2
TiO2
Al2O3
Fe2O3
FeO
MnO
MgO
CaO
Na2O
K2O
P2O5
FeO*
0.00 1184 50.70 1.71 16.05 1.26 8.00 0.20 7.17 11.35 3.17 0.19 0.19 9.13 2.67 0.615 (0.849) 0.687 0.837
0.05 1180 50.86 1.80 15.67 1.31 8.20 0.21 6.96 11.40 3.20 0.20 0.20 9.37 2.67 0.602   0.680 0.830
0.10 1174 51.02 1.89 15.28 1.36 8.39 0.22 6.75 11.45 3.22 0.21 0.21 9.62 2.67 0.589   0.672 0.821
0.15 1168 51.22 2.00 14.80 1.42 8.64 0.22 6.49 11.52 3.25 0.22 0.23 9.91 2.68 0.573   0.663 0.810
0.20 1161 51.42 2.12 14.29 1.48 8.88 0.23 6.23 11.61 3.27 0.23 0.24 10.21 2.68 0.556   0.655 0.798
0.25 1154 51.61 2.25 13.79 1.55 9.13 0.24 5.99 11.66 3.30 0.24 0.26 10.52 2.68 0.539 0.816 0.647 0.785
0.35 1143 51.81 2.57 12.92 1.72 9.96 0.26 5.56 11.23 3.41 0.27 0.30 11.51 2.69 0.499 0.796 0.617 0.754
0.40 1137 51.89 2.73 12.49 1.81 10.36 0.27 5.34 11.04 3.46 0.29 0.32 11.99 2.69 0.479 0.785 0.603 0.738
0.45 1130 51.99 2.96 11.91 1.93 10.90 0.28 5.06 10.80 3.51 0.31 0.35 12.64 2.70 0.453 0.770 0.585 0.716
0.50 1122 52.07 3.21 11.30 2.06 11.45 0.30 4.76 10.57 3.56 0.34 0.38 13.30 2.71 0.426 0.753 0.567 0.691
0.55 1112 52.16 3.55 10.51 2.23 12.14 0.32 4.39 10.30 3.62 0.37 0.43 14.15 2.72 0.392 0.731 0.546 0.658
0.60 1102 52.24 3.92 9.66 2.41 12.87 0.33 4.01 10.03 3.66 0.40 0.48 15.04 2.73 0.357 0.706 0.527 0.622
0.65 1087 53.41 3.60 9.25 2.45 12.86 0.34 3.43 9.85 3.83 0.45 0.54 15.06 2.71 0.322 0.682 0.496 0.580
0.69 1069 55.16 2.98 8.92 2.43 12.57 0.35 2.74 9.64 4.06 0.51 0.63 14.76 2.69 0.280 0.649 0.459 0.526
0.75 1048 57.60 2.12 8.53 2.37 12.07 0.35 1.95 9.31 4.35 0.60 0.76 14.20 2.66 0.224 0.597 0.416 0.447
0.80 1026 61.19 0.83 8.03 2.21 11.15 0.35 1.13 8.70 4.73 0.73 0.94 13.14 2.60 0.153 0.503 0.363 0.333
0.85 1006 66.03   7.18 1.88 9.60 0.35 0.38 7.23 5.18 0.92 1.25 11.29 2.53 0.066 0.308 0.290 0.164
0.87 1000 68.78   6.61 1.63 8.52 0.35 0.16 6.06 5.41 1.04 1.45 9.98 2.49 0.033 0.182 0.245 0.086

Notes: Parental melt is glass in dredge sample 5-3, Conrad Cruise 27-09 (Natland et al., 1991, table 1; Johnson and Dick, 1992, table 5). Perfect fractional crystallization is modeled in steps of 1 wt% of the remaining liquid. The conditions were assumed to be open with respect to oxygen and iron oxidation constrained by the fayalite-magnetite-quartz oxygen buffer. For details of calculations see the text. FeO* = total iron calculated as FeO. Mg# = Mg/(Mg + Fe2+) for liquid and Mg/(Mg + Fetotal) for augite. An = anorthite, Fo = forsterite.