Pyrargyrite

This sample of pyrargyrite is displayed in the Smithsonian Museum of Natural History. Pyrargyrite is an sulfide mineral of silver and antimony with the composition Ag₃SbS₄. This sample is about 8X10 cm and is from Andreasberg, Niedersachsen, Germany.

This pyrargyrite sample is about 4X5 cm and is from Guanajuato, Mexico.