AM_Mereiterite
Formula: K2 Fe S2 O12 H8
Name: Mereiterite
Unit cell: 11.834 9.502 9.913 90.0 94.87 90.0 , V=1110.66
Space group: P121/A1 (14)

Hertweck B , Giester G , Libowitzky E , American Mineralogist , 86 (2001) p.1282-1292, The crystal structures of the low-temperature phases of leonite-type compounds,, K2Me(SO4)2.4H2O (Me=Mg,Mn,Fe), Sample: K2Fe(SO4)2.4H2O, T = 185 K