Fig. 8. Fugacity of Sulfur versus temperature diagram for stage I of the Geochang Au-Ag deposit showing the possible sulfur fugacity and temperature ranges with sulfidation reactions. Abbreviations: Arg=argentite, Asp=arsenopyrite, Hm=hematite, Mt=magnetite, NAg=atomic fraction Ag in electrum, Po=pyrrhotite, Py=pyrite.

Econ. Environ. Geol. 2022;55:171-81 https://doi.org/10.9719/EEG.2022.55.2.171

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