AM_Dumontite Formula: Pb2 U3 P2 O21 Name: Dumontite Unit cell: 8.118 16.819 6.983 90.0 109.03 90.0 , V=901.33 Space group: P121/M1 (11)

Piret P , Piret-Meunier J , Bulletin de Mineralogie , 111 (1988) p.439-442, Nouvelle determination de la structure cristalline, de la dumonite Pb2[(UO2)3O2(PO4)2]*5H2O, Locality: Shinkolobwe, Shaba, Zaire