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ATHENA

MINERALOGY

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Mineral:BIOTITE (-1M,-2M,-5M1,-6A) = Series name
Formula:K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2 (?)
Crystal System:Monoclinic / Anorthic (Triclinic)
Group:Mica group
References:HB2/1 (1995); CM 36 (1998), 905
Type Locality:Trioctahedral micas without Li

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