Table 5 Chemical composition of dolomite. Units are weight percent of oxides and atoms per formula unit
From: Melting carbonated epidote eclogites: carbonatites from subducting slabs
Run | SPT1 | EFSP2 | SPT2 | SPT5 | ST9 |
|---|---|---|---|---|---|
P (GPa) | 3.7 | 3.8 | 3.8 | 4.2 | 4.2 |
T (°C) | 750 | 800 | 775 | 900 | 850 |
FeO | 4.44 (0.67) | 4.04 (0.76) | 4.51 (0.14) | 3.66 (0.39) | 0.43 (0.15) |
MgO | 18.14 (0.16) | 17.82 (3.18) | 18.58 (0.47) | 17.78 (1.67) | 20.59 (0.21) |
CaO | 28.45 (1.39) | 30.37 (1.85) | 29.57 (0.76) | 31.25 (0.69) | 30.93 (0.84) |
Na2O | 0.12 (0.11) | 0.10 (0.05) | 0.17 (0.09) | 0.04 (0.02) | 0.01 (0.01) |
CO2 | 48.24 (0.01) | 47.52 (3.30) | 47.37 (0.94) | 46.36 (1.71) | 47.08 (0.68) |
Total | 99.39 (0.37) | 99.84 (6.55) | 100.19 (2.29) | 99.10 (3.20) | 99.05 (1.55) |
Fe2+ | 0.113 (0.017) | 0.104 (0.017) | 0.117 (0.004) | 0.097 (0.013) | 0.011 (0.004) |
Mg | 0.821 (0.007) | 0.812 (0.113) | 0.857 (0.031) | 0.836 (0.048) | 0.955 (0.015) |
Ca | 0.926 (0.044) | 1.005 (0.044) | 0.980 (0.011) | 1.059 (0.036) | 1.031 (0.017) |
Na | 0.007 (0.007) | 0.006 (0.004) | 0.010 (0.005) | 0.002 (0.001) | 0.000 (0.000) |
C | 2.000 (0.000) | 2.000 (0.000) | 2.000 (0.000) | 2.000 (0.000) | 2.000 (0.000) |