Pb₅Sb₈S₁₇

This sample of plagionite is displayed in the Smithsonian Museum of Natural History. Plagionite is an sulfide mineral of antimony and lead with the composition Pb₅Sb₈S₁₇ . This sample is about 6x9 cm and is from Oruro, Bolivia. It is described as plagionite with frankeite and boulangerite.