Mindat Short Description
The most common member of the alunite supergroup. The Fe(III) analogue of alunite. Visually indistinguishable from natrojarosite and other members of the jarosite group.
Usually found as amber-yellow to brown crusts or coatings of minute crystals, ...
Geoscience Ontology Status Notes
Breithaupt J F A (1852) Jarosit, jarosites kalicus, Berg- und Huttenmannische Zeitung 11, 68-69
IMA Formula (from Mindat)
KFe3+3(SO4)2(OH)6
RRUFF Formula (from Geoscience Ontology)
KFe3+3(S6+O4)2(OH)6