AM_Uranophane - alpha
Formula: U2 Si2 Ca O12
Name: Uranophane - alpha
Unit cell: 15.97 7.07 6.68 90.0 97.3 90.0 , V=748.11
Space group: P1211 (4)

Smith D K , Gruner J W , Lipscomb W N , American Mineralogist , 42 (1957) p.594-618, The crystal structure of uranophane [Ca(H3O)2](UO2)2(SiO4)2.3H2O