AM_Hydroniumjarosite_4
Formula: Na.49 H6.51 Fe3 S2 O14
Name: Hydroniumjarosite
Unit cell: 7.33876 7.33876 16.8105 90.0 90.0 120.0 , V=784.07
Space group: R-3M (166)

Basciano L C , Peterson R C , American Mineralogist , 93 (2008) p.853-862, Crystal chemistry of the natrojarosite-jarosite and natrojarosite-hydronium, jarosite solid-solution: A synthetic study with full Fe site occupancy, Locality: synthetic, Sample: S