AM_Fluckite Formula: Ca Mn As2 O10 H6 Name: Fluckite Unit cell: 8.459 7.613 6.968 82.21 98.25 95.86 , V=438.42 Space group: P-1 (2)

Catti M , Chiari G , Ferraris G , Bulletin de Mineralogie , 103 (1980) p.129-134, Fluckite, CaMn(HAsO4)2*2H2O, a structure related, by pseudo-polytypism to krautite MnHAsO4*H2O, Locality: Sainte Marie-aux-Mines, Alsace, France