AM_Jarosite_6 Formula: K.02 H7 Fe3 S2 O14 Name: Jarosite Unit cell: 7.3478 7.3478 17.028 90.0 90.0 120.0 , V=796.18 Space group: R-3M (166)

Basciano L C , Peterson R C , American Mineralogist , 92 (2007) p.1464-1473, Jarosite - hydronium jarosite solid solution series with, full iron occupancy: Mineralogy and crystal chemistry, Locality: Rio Tonto, Huelva, Spain, Sample: 7-13-2-1