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ATHENA

MINERALOGY

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Mineral:AMMONIOALUNITE
Formula:(NH4)2Al6(SO4)4(OH)12
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:6/B.11-30
Group:Alunite-Jarosite group Alunite subgroup
References:AM 73 (1988), 14; HB5 (2003)
Type Locality:The Geysers, Sonoma Co., California, USA

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