The mineral petzite, silver, Ag₃gold, Autellurium, Te₂, is a soft, steel-gray telluride mineral generally deposited by hydrothermal activity. It forms Cubic crystal system, isometric crystals, and is usually associated with rare tellurium and gold minerals, often with silver, mercury (element), mercury, and copper. The name comes from chemist W. Petz, who first analyzed the mineral from the Type locality (geology), type locality in Săcărâmb, Transylvania, Romania in 1845. It was described by Wilhelm Karl Ritter von Haidinger in 1845 and dedicated to W. Petz who had carried out the first analyses. It occurs with other tellurides in Vein (geology), vein gold deposits. It is commonly associated with native gold, hessite, sylvanite, krennerite, calaverite, altaite, montbrayite, melonite, frohbergite, tetradymite, rickardite, vulcanite and pyrite. Petzite forms together with uytenbogaardtite (Ag₃AuS₂) and fischesserite (Ag₃AuSe₂) the uytenbogaardtite group.

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Silver minerals Gold minerals Gold(I) compounds Telluride minerals Cubic minerals Minerals in space group 214 Minerals described in 1845 {{mineral-stub

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