What is the PQO file format?
A file with the .PQO extension is a file known as PhreeqcI. It belongs to the Misc Files category. This format is associated with U.S. Geological Survey.
The reliable way to open a .PQO file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .PQO files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
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