Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:HYDROBIOTITE
Formula:K(Mg,Fe)6(Si,Al)8O20(OH)4 · xH2O
Crystal System:Monoclinic
Strunz Nr:8/H.18-70
Group:Smectite Group
References:HB2/1 (1995)
Comments:Regular Biotite-Vermiculite interstratification

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