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ATHENA

MINERALOGY

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Mineral: AMMONIOJAROSITE
Formula: (NH4)2Fe3+6(SO4)4(OH)12
Crystal System: Rhombohedral (Trigonal)
Group: Alunite supergroup. Alunite group
IMA Number: 1987 s.p.
References: CM 20 (1982), 91; HB5 (2003)
Type Locality: Kaibab Fault, Utah, USA

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