Table 8 Chemical composition of solids precipitated on quenching experiments. Units are weight percent of oxides and atoms per formula unit for carbonate. CIPW norm is given for silicate glass
From: Melting carbonated epidote eclogites: carbonatites from subducting slabs
| Â | Quench carbonate | Â | Silicate glass | |
|---|---|---|---|---|
Run | SPT5 | SPT8 | Run | SPT8 |
P (GPa) | 4.2 | 4.2 | P (GPa) | 4.2 |
T (°C) | 900 | 900 | T (°C) | 900 |
SiO2 | 1.79 (0.70) | 1.79 (1.81) | SiO2 | 65.89 (3.32) |
Al2O3 | 1.41 (0.18) | 0.38 (0.21) | Al2O3 | 12.22 (1.68) |
FeO | 5.38 (0.39) | 4.22 (0.43) | FeO | 0.60 (0.77) |
MgO | 3.76 (0.26) | 6.53 (0.35) | MgO | 0.41 (0.04) |
CaO | 40.16 (0.85) | 40.22 (1.43) | CaO | 2.85 (0.65) |
Na2O | 2.26 (0.07) | 2.27 (1.23) | Na2O | 2.31 (1.90) |
CO2 | 44.68 (0.43) | 46.25 (1.08) | - | Â |
Total | 99.42 | 101.66 | Total | 84.28 (3.87) |
Si | 0.06 (0.02) | 0.06 (0.06) | Q | 51.38 |
Al | 0.05 (0.01) | 0.01 (0.01) | ab | 25.19 |
Fe2+ | 0.15 (0.01) | 0.11 (0.01) | an | 17.17 |
Mg | 0.18 (0.01) | 0.31 (0.02) | cor | 4.28 |
Ca | 1.41 (0.04) | 1.36 (0.02) | hy | 1.38 |
Na | 0.14 (0.01) | 0.14 (0.07) | mt | 0.08 |
C | 2.00 (0.00) | 2.00 (0.00) | hem | 0.52 |