Citation: Gruner, J. W. (1934). The structures of vermiculites and their collapse by dehydration. American Mineralogist, 19, pp. 557-575.
Formula: H2 Mg3 O12 Si4
List type: interleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Mg6 O24 Si8 (Mg3 O12 Si4)
Multiplicity: 1
Coordination sequences: