Citation: Grice, J. D.; Gault, R. A.; Van Velthuizen, J. (1997). Brianroulstonite: A new borate mineral with a sheet structure. The Canadian Mineralogist, 35, pp. 751-758.
Formula: B5 Ca3 Cl2 H23 O21
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;0;1)
Dimensionality: 2
Formula: B10 O24 (B5 O12)
Multiplicity: 1