Cu₂Cl(OH)₃

This sample of atacamite is displayed in the Smithsonian Museum of Natural History. Atacamite contains copper and chlorine and has the composition Cu₂Cl(OH)₃. It is about 6 cm across and is from Burra, South Australia, Australia.

This sample of atacamite is about 5x10 cm and is from Copiapo, Atacama, Chile. It is described as atacamite with kaolinite.