AM_Magnussonite
Formula: Mn5.922 Mg.37 Cu.34 As4 O12.134 Cl.534 H.134
Name: Magnussonite
Unit cell: 19.68 19.68 19.68 90.0 90.0 90.0 , V=7622.11
Space group: IA-3D (230)

Moore P B , Araki T , American Mineralogist , 64 (1979) p.390-401, Magnussonite, manganese arsenite, a fluorite derivative structure