Bournonite

This sample of bournonite is displayed in the Smithsonian Museum of Natural History. Bournonite is an sulfide mineral of copper, antimony and lead with the composition CuPbSbS₃ . This sample is about 4x4 cm and is from Noche Buena, Zacatecas, Mexico. This sample also contains Jamesonite.

This sample of bournonite is about 11x11 cm and is from Quiruvilea, La Libertad, Peru.