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  1. Hello, I'm trying to simulate the speciation of FeS systems and the solubility of a number of iron sulfide phases. I have successfully plotted activity predominance diagrams using Act2, but I am struggling with Phase2. I would like to plot the solubility of individual phases (e.g. mackinawite / pyrite) on pH/pe diagrams. However, I keep getting convergence errors. I have tried following the examples in the user guides, such as that for O2 solubility on a colour plot (this is what I would like for my system), but as soon as I replace the species for those I am interested in, it falls down.
  2. Hi GWB folks, I'm using Phase2 and P2plot to make solubility plots for several Fe(II) minerals, and am wondering if there is a way to output the data from an assemblage map or a predominance area plot to Excel or another plotting program. It appears to me that the "Edit->Copy As -> text (space delimited)" option is greyed out for P2plot. In the past I've used output from Visual Minteq and our plotting program of choice (Igor Pro) to make plots like this. We recently published several of these in a paper. I've attached a figure to show what I'm talking about. These plots represe
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