AM_Volborthite Formula: Cu3 V2 O11 H6 Name: Volborthite Unit cell: 10.607 5.864 7.214 90.0 94.88 90.0 , V=447.08 Space group: C12/M1 (12)

Lafontaine M A , LeBail A , Ferey G , Journal of Solid State Chemistry , 85 (1990) p.220-227, Copper-containing minerals - I. Cu3V2O7(OH)2,2H2O: The synthetic homolog