Citation: Tyrna, P. L.; Guggenheim, S. (1991). The crystal structure of norrishite, KLiMn2Si4O12: An oxygen-rich mica. American Mineralogist, 76, pp. 266-271.
Formula: K Li Mn2 O12 Si4
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Mn4 O24 Si8 (Mn O6 Si2)
Multiplicity: 1