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ATHENA

MINERALOGY

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Mineral:GEFFROYITE
Formula:(Ag,Cu,Fe)9(Se,S)8
Crystal System:Cubic
Strunz Nr:2/B.16-40
Group:Pentlandite group
References:TMPM 29 (1982), 151; HB1 (1990)
Type Locality:Chaméane, Vernet-la-Varenne, Livardois Mts, Puy-de-Dôme, France

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