Gold chalcogenides

Gold chalcogenides are compounds formed between gold and one of the chalcogens, elements from group 16 of the periodic table: oxygen, sulfur, selenium, or tellurium.

Gold oxide, Au₂O₃. Decomposes into gold and oxygen above 160 °C, and dissolves in concentrated alkalis to form solutions which probably contain the ⁻ ion
Gold sulfide, Au₂S. Formed by reaction of hydrogen sulfide with gold compounds.
Gold sulfide, Au₂S₃, claimed material but unsubstantiated.
Gold tellurides: Au₂Te₃, Au₃Te₅, and AuTe₂ are known as non-stoichiometric compounds. They show metallic conductivity. Au₃Te₅ is a superconductor at 1.62 K.

Gold telluride minerals, such as calaverite and krennerite, petzite, and sylvanite, are minor ores of gold. See telluride minerals for more information.