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 Gold chalcogenides : Gold chalcogenide 

The interesting thing about gold chalcogenides is the reversal in stability going from O to S to Se to Te. For gold the tellurides are the most stable (even as minerals), the sulfide and oxide are metastable. For most other metals it is the other way around.

Gold tellurides

AuTe2 is present as a number of minerals, the most common being calaverite[?]. Calaverite[?] is the most important source of gold after native gold]].

Gold selenides

AuSe exists in two forms, AuSe and Au2Se3.

Gold sulphides

Au2S is metastable, but mixed silver-gold sulfides like AgAuS do exist.

No studies of gold polonides have been conducted yet, as polonium is very rare in nature.

See also


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