Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:FOUGERITE
Formula:(Fe2+,Mg)6Fe3+2(OH)18 · 4H2O
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:4/F.05-12
References:Clays Clay Min. 55 (2007), 323
Type Locality:Forêt de Fougères, Ille-et-vilaine, Bretagne (Brittany), France

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