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ATHENA

MINERALOGY

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Mineral:JACOBSITE
Formula:(Mn2+,Fe2+,Mg)(Fe3+,Mn3+)2O4
Crystal System:Cubic
Strunz Nr:4/B.02-30
Group:Spinel group
References:DAN Earth Sci. 314 (1990), 174; HB3 (1997)
Type Locality:Jakobsberg mine, Nordmark, Filipstad, Värmland (Varmland, Wermland), Sweden

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