Citation: Williams, E. R.; Weller, M. T. (2012). A variable-temperature neutron diffraction study of ussingite; a strong asymmetric hydrogen bond in an aluminosilicate framework Note: T = 4 K. Physics and Chemistry of Minerals, 39, pp. 471-478.
Formula: Al H Na2 O9 Si3
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al2 H2 O18 Si6 (Al H O9 Si3)
Multiplicity: 1