Supercritical Fluid Geochemistry in Geothermal Systems

Figure 5

Mineral saturation state of selected minerals at subcritical conditions. The reaction quotients were calculated using the Phreeqc program [61] and the llnl.dat database. Also shown are mineral solubilities and the mineral reaction quotients for reservoir fluids at Krafla at the measured reservoir temperatures, both obtained from Gudmundsson and Arnórsson [41].