Citation: Moore, P. B.; Araki, T. (1979). Armangite, Mn26[As6(OH)4O14][As6O18]2[CO3], a fluorite derivative structure. American Mineralogist, 64, pp. 748-757.
Formula: C As18 Mn26 O57
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: C As18 Mn26 O60 (C As18 Mn26 O60)
Multiplicity: 1
Coordination sequences: