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Re: non-convergence

> The radium01.txt runs (converge in that sense), just
give gabage results. I did remove the knobs data

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

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 Parkhurst (dlpark@xxxxxxxx)
U.S. Geological Survey
Box 25046, MS 413
Denver Federal Center
Denver, CO 80225

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