Papagoite is a rare cyclosilicate mineral aluminium, found as a secondary mineral on slip surfaces and in altered granodiorite veins, either in massive form or as microscopic crystals that may form spherical aggregates. Its chemical formula is Ca 6(O )3.
It was discovered in 1960 in Ajo, Arizona , and was named after the Hia C-ed O'odham people (also known as the Sand Papago) who inhabit the area. This location is the only papagoite source within the United States, while worldwide it is also found in South Africa. It is associated with aurichalcite and baryte, native copper Its bright blue color is the mineral's most notable characteristic.
It is used as a gemstone.