tyuyamunite
Tyuyamunite is a uranium vanadate mineral with the chemical formula Ca(UO2)2(VO4)2·11H2O. It is a member of the carnotite group and is characterized by its bright yellow color. Tyuyamunite is a secondary mineral, meaning it forms through the alteration of other uranium-bearing minerals. It is typically found in oxidized zones of uranium deposits. The mineral was first described in 1942 from a discovery in the Tyuyamun deposit in the Fergana Valley, Uzbekistan, which gives it its name.
The crystal structure of tyuyamunite consists of layers of uranyl groups (UO2)2+ and vanadate groups (VO4)3-,
Tyuyamunite is an important indicator mineral for uranium mineralization, as its presence suggests that uranium has