stibiopalladinite

Stibiopalladinite is a rare mineral composed of a native alloy of palladium and antimony, with the chemical formula Pd₃Sb. It is classified as an antimonide, a group of minerals that are compounds of metals with antimony. Stibiopalladinite exhibits trigonal symmetry and is considered a primary source of palladium. It is often found in deposits alongside other platinum-group metals like platinum, as well as with minerals such as pyrrhotite and chalcopyrite. Notable occurrences include the Bushveld Complex in South Africa, Kambalda in Western Australia, and Norilsk in Russia. Like other antimonides, it has a metallic luster, is opaque, and possesses a high specific gravity and moderate to low hardness.12