Anti-wurtzite reoriented

Anti-wurtzite and wurtzite are shown to be the same crystal structure despite the claims of a recent paper describing the crystal structure of the mineral rambergite, Mn_1−xFe_xS, x ≃ 0.05. The anti-wurtzite/wurtzite confusion is used as an illustration to help clarify the correct general approach to take in the treatment and presentation of achiral non-centrosymmetric crystal structures.