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Re: exception violation

There is another database file called wateq4f.dat that has selenium
included. You can either use that database file or look at the definitions
guide. You can also look at sulfur in phreeqc.dat as an analog.  It looks
like you are using PhreeqcI version 1, in which case you can change the
database file through the Options menu on the main screen.

Version 2 of PHREEQC was published in 1999. The current release has 4
databases, including phreeqc.dat, wateq4f.dat, minteq.dat, and llnl.dat.
All of them except phreeqc.dat have some selenium data. There is also a new
version of PhreeqcI, which is in the final stages of development, that is
available. It has screens for all keywords except the thermodynamic data
Unfortunately, you appear to be using these. The interface allows adding
these keywords through the editor or pasting into the editor, but does not
have the screens to guide the input. The interface is complete in that it
will read and run any valid PHREEQC version 2 file and all keywords can be
entered and edited through the main edit screen. The database file can be
changed through the Properties entry in the Files menu on the main screen.
PHREEQC and PhreeqcI version 2 are available at

You jumbled some of  the definitions of the redox species, but the program
should not have crashed. I've put some extra checks in the program, so that
the next version should not give a segmentation violation. Thanks for
sending in the bug.


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

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