AM_Lammerite Formula: Cu3 As2 O8 Name: Lammerite Unit cell: 5.079 11.611 5.394 90.0 111.72 90.0 , V=295.51 Space group: P121/A1 (14)

Hawthorne F C , American Mineralogist , 71 (1986) p.206-209, Lammerite, Cu3(AsO4)2, a modulated close-packed structure