AM_Rb2Cu(Cr2O7)2_2H2O Formula: Rb2 Cu Cr4 O16 H4 Name: Rb2Cu(Cr2O7)2*2H2O Unit cell: 7.272 7.648 7.772 91.89 99.72 115.79 , V=380.84 Space group: P-1 (2)

Kolitsch U , Fleck M , European Journal of Mineralogy , 18 (2006) p.471-482, Third update on compounds with krohnkite-type chains: the crystal structure of, wendwilsonite [Ca2Mg(AsO4)2*2H2O] and the new triclinic structure types of, synthetic AgSc(CrO4)2*2H2O and M2Cu(Cr2O7)2*2H2O (M = Rb, Cs), Locality: synthetic