AM_Natrojarosite_3
Formula: Na.87 H6.13 Fe3 S2 O14
Name: Natrojarosite
Unit cell: 7.31984 7.31984 16.6474 90.0 90.0 120.0 , V=772.47
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: Q