Introduction to Pʜʀᴇᴇǫᴄ
This work was partly supported by NSF grant EAR-1926734, the endowment for the Haydn Murray Chair, and the Office of the Vice Provost for Research of Indiana University.
ᴘʜʀᴇᴇǫᴄ is a geochemical modeling software distributed by the U.S. Geological Survey and developed by David Parkhurst and Tony Appelo. The version here, modified by David Parkhurst, is capable of calculations at elevated temperatures and pressures. High P-T calculations need to use proper thermodynamic datasets, which is described below.
You can find the thermodynamic datasets distributed with the ᴘʜʀᴇᴇǫᴄ software in the menu. We added the library of BASIC language RATES blocks for about 100 minerals from Zhang et al. (2019) to these two datasets.
Additionally, we have included new datasets. These new datasets have thermodynamic properties consistent with those in Zimmer et al. (2016) and allow ᴘʜʀᴇᴇǫᴄ calculations at elevated temperature and pressure.
You can generate databases at other P-T ranges using the program SupPʜʀᴇᴇǫᴄ..
This material was prepared, in part, sponsored by an agency of the United States Government or Indiana University. Neither the United States Government, nor Indiana University, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.