AM_Natrojarosite_2 Formula: Na Fe3 S2 O14 H6 Name: Natrojarosite Unit cell: 7.31525 7.31525 16.5868 90.0 90.0 120.0 , V=768.69 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: P