AM_Nissonite Formula: Cu2 P2 Mg2 O15 H12 Name: Nissonite Unit cell: 22.523 5.015 10.506 90.0 99.62 90.0 , V=1170.00 Space group: C12/C1 (15)

Groat L A , Hawthorne F C , American Mineralogist , 75 (1990) p.1170-1175, The crystal structure of nissonite