Tags: Chemical Substance, Mineral.
The mineral uytenbogaardtite Ag3AuS2 is a soft greyish white sulfide mineral occurring in hydrothermal Au-Ag-quartz veins. It occurs as tiny crystals visible only with a microscope. It has a metallic luster and a hardness on the Mohs scale of 2 (gypsum). It forms together with petzite (Ag3AuTe2) and fischesserite (Ag3AuSe2) the uytenbogaardtite group.