The alunite group includes:
alunite:
KAl3(SO4)2(OH)6
ammoniojarosite:
(NH4)Fe3+3(SO4)2(OH)6
argentojarosite:
AgFe3+3(SO4)2(OH)6
beaverite-(Cu):
Pb(Fe3+2Cu)(SO4)2(OH)6
beaverite-(Zn):
Pb(Fe3+2Zn)(SO4)2(OH)6
hydroniumjarosite:
(H3O)Fe3+3(SO4)2(OH)6
jarosite:
KFe3+3(SO4)2(OH)6
natroalunite:
NaAl3(SO4)2(OH)6
natrojarosite:
NaFe3+3(SO4)2(OH)6
osarizawaite:
Pb(Al2Cu2+)(SO4)2(OH)6
plumbojarosite:
Pb0.5Fe3+3(SO4)2(OH)6
schlossmacherite:
(H3O)Al3(SO4)2(OH)6
It is a member of the alunite supergroup
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