Table 1.
Carbonate solubility data.
| Mineral and Fluid | Pressure (GPa) | Temperature (°C) | Concentration (m) |
|---|---|---|---|
| Optical solubility experiments | |||
| Dolomite, CaMg(CO3)2 in 1 m NaCl(aq) | 6.9 (3) | 400 (2) | 0.32 (2)a |
| 3.2 (2) | 412 (2) | 0.020 (4) | |
| 2.3 (1) | 200 (2) | 0.0027 (9) | |
| 6.4 (3) | 400 (2) | 0.021 (4) | |
| 8.8 (4) | 400 (2) | 0.046 (4)a | |
| 5.0 (3) | 500 (2) | 0.024 (5)a | |
| Magnesite, MgCO3 in 1 m NaCl(aq) | 5.8 (3) | 400 (2) | 0.14 (2)a |
| 6.2 (3) | 400 (2) | 0.009 (3)a | |
| Synchrotron X-ray fluorescence spectroscopy experiments | |||
| Rhodochrosite, MnCO3 in H2O | 4.4 (2) | 300 (2) | 0.007 (1) |
| 4.4 (2) | 300 (2) | 0.006 (1) | |
| 4.9 (2) | 300 (2) | 0.007 (2) | |
| Rhodochrosite, MnCO3 in 1 m NaCl(aq) | 2.3 (1) | 300 (2) | 0.012 (2) |
| 4.3 (2) | 300 (2) | 0.030 (6) | |
| 4.3 (2) | 300 (2) | 0.030 (6) | |
| 5.9 (3) | 300 (2) | 0.039 (8) | |
| 6.8 (3) | 415 (2) | 0.036 (7) | |
aCrystals that would represent these solubilities did not dissolve, hence these values represent maximum solubilities.