Cu₂AsO₄(OH)

This sample of olivenite is displayed in the Smithsonian Museum of Natural History. Olivenite is an oxide mineral which contains copper and arsenic with the composition Cu₂AsO₄(OH). This sample is about 7x12 cm and is from Tsumeb, Namibia.

This olivinite sample is about 12x14 cm and is also from Tsumeb, Namibia.