AM_Erythrite Formula: Co2.01 Fe.74 Ni.25 As2 O16 H16 Name: Erythrite Unit cell: 10.251 13.447 4.764 90.0 104.98 90.0 , V=634.38 Space group: C12/M1 (12)

Wildner M , Giester G , Lengauer C L , McCammon C A , European Journal of Mineralogy , 8 (1996) p.187-192, Structure and crystal chemistry of vivianite-type compounds: Crystal, structures of erythrite and annabergite with a Mossbauer study of erythrite