AM_Compreignacite Formula: U6 K2.04 O28.84 H12.62 Name: Compreignacite Unit cell: 14.8591 7.1747 12.1871 90.0 90.0 90.0 , V=1299.26 Space group: PNNM (58)

Burns P C , The Canadian Mineralogist , 36 (1998) p.1061-1067, The structure of compreignacite, K2((UO2)3O2(OH)3)2(H2O)7