AM_Sigloite Formula: Fe.5 Al P O9 H13.5 Name: Sigloite Unit cell: 5.19 10.419 7.033 105.0 111.31 70.87 , V=330.49 Space group: P-1 (2)

Hawthorne F C , Mineralogy and Petrology , 38 (1988) p.201-211, Sigloite: The oxidation mechanism in [M2(PO4)2(OH)2(H21O)2] structures, Locality: Siglo XX Mine, Llallagau, Bolivia