Economic and Environmental Geology

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Fig. 8.

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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
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