Citation: Moore, P. B.; Araki, T. (1979). Magnussonite, manganese arsenite, a fluorite derivative structure. American Mineralogist, 64, pp. 390-401.
Formula: As4 Cl0.534 Cu0.34 H0.134 Mg0.37 Mn5.922 O12.134
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: As96 Cl48 Cu48 Mg120 Mn264 O336 (As4 Cl2 Cu2 Mg5 Mn11 O14)