> The radium01.txt runs (converge in that sense), just give gabage results. I did remove the knobs data block. PHREEQC doesn't really know how to remove a solid solution completely. The results are ok with the interpretation that when the concentrations of each component is on the order of 1e-14 or less, the solid has completely dissolved. In your case, barite is the predominant phase and when the saturation index for barite drops below 0, then the solid solution is undersaturated and does not exist. The details for the solid solution (moles, mole fractions, etc) are garbage when the solid solution does not exist. I may try to add some logic on this for the printout, but unless you see some problem with the compositions when the solid solution is present, I think the results are alright. David David Parkhurst (dlpark@xxxxxxxx) U.S. Geological Survey Box 25046, MS 413 Denver Federal Center Denver, CO 80225 Project web page: https://wwwbrr.cr.usgs.gov/projects/GWC_coupled
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