This package is a high-level wrapper around the phreeqc-package, which provides a low-level interface to the phreeqc modelling environment.
Parkhurst DL and Apello CAJ. Description of Input and Examples for PHREEQC. Version 3 - A Computer Program for Speciation, Batch-Reaction, One-Dimensional Transport, and Inverse Geochemical Calculations. Available from https://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc/phreeqc3-html/phreeqc3.htm.
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