AM_Dixenite Formula: Mn12.9 Mg.1 Fe Cu.843 Si1.7 As6.3 O33 H6 Name: Dixenite Unit cell: 8.233 8.233 37.499 90.0 90.0 120.0 , V=2201.24 Space group: R113 (1)

Araki T , Moore P B , American Mineralogist , 66 (1981) p.1263-1273, Dixenite, CuMn14Fe(OH)6(AsO3)5(SiO4)2(AsO4): Metallic [As4Cu] clusters, in an oxide matrix