Citation: Evans, H. T. (1989). The crystal structure of hewettite Note: sample Weeks number W-220-54. The Canadian Mineralogist, 27, pp. 181-188.
Formula: Ca0.5 O11.5 V3
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: O16 V6 (O8 V3)
Multiplicity: 1
Coordination sequences: