Minerals
The uranyl ion occurs in minerals derived from uranium ore deposits by water-rock interactions that occur in uranium-rich mineral seams. Tyuyamunite (Ca(UO2)2V2O8•8H2O), autunite (Ca(UO2)2(PO4)2•8-12H2O), torbernite (Cu(UO2)2 (PO4)•8-12H2O) and uranophane (H3O)2Ca (UO2)2(SiO4)•3H2O) are examples of uranyl containing minerals. These minerals are of little commercial value as most uranium is extracted from pitchblende.
Read more about this topic: Uranyl