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ATHENA

MINERALOGY

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Mineral:GLAUCONITE
Formula:(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
Crystal System:Monoclinic
Strunz Nr:8/H.13-40
Group:Mica group Interlayer-deficient mica. Dioctahedral
References:Rev. Min. 13 (1984), 575; HB2/1 (1995); CM 36 (1998), 905
Comments:Dioctahedral interlayer deficient-micas. [] = vacancy

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