Jarosite


Composition: KFe3+3(SO4)2(OH)6
Crystal System : Trigonal
Colours: Yellow, ochre-brown, blackish-brown
Lustre : Sub-adamantine, resinous, dull, earthy
Hardness : 2.5-3.0
Specific Gravity : 2.91-3.26

Occurrence

  • Supergene