Citation: Heinrich, A. R.; Eggleton, R. A.; Guggenheim, S. (1994). Structure and polytypism of bementite, a modulated layer silicate. American Mineralogist, 79, pp. 91-106.
Formula: Mn6.683 O23 Si6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Mn56 O184 Si48 (Mn7 O23 Si6)
Multiplicity: 1
Coordination sequences: