Citation: Grice, J. D.; Gault, R. A. (1995). Varennesite, a new species of hydrated Na-Mn silicate with a unique monophyllosilicate structure. The Canadian Mineralogist, 33, pp. 1073-1081.
Formula: H2 Mn2 Na8 O39 Si10
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Mn8 O108 Si40 (Mn2 O27 Si10)
Multiplicity: 1