AM_Chalcosiderite Formula: Cu (Fe5.46 Al.54) P4 O28 H16 Name: Chalcosiderite Unit cell: 7.653 7.873 10.19 67.57 69.17 64.93 , V=500.08 Space group: P-1 (2)

Giuseppetti G , Mazzi F , Tadini C , Neues Jahrbuch fur Mineralogie, Monatshefte , 1989 (1989) p.227-239, The crystal structure of chalcosiderite, CuFe3+6(PO4)4(OH)8*4H2O, Locality: Wheal Phoenix Mine, Cornwall, England