Uranophane Ca(UO2)2(SiO3OH)2·5H2O is a rare calcium uranium silicate hydrate mineral that forms from the oxidation of uranium bearing minerals. Uranophane is also known as uranotile. General Name, Symbol, Number Uranium, U, 92 Chemical series Actinides Period, Block 7, f Density, Hardness 19050 kg/m3, 6 Appearance silvery-white metal Atomic properties Atomic weight 238. ...