Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:FERROSAPONITE
Formula:Ca0.3(Fe2+,Mg,Fe3+)3(Si,Al)4O10(OH)2 · 4H2O
Crystal System:Monoclinic
Strunz Nr:8/H.20-27
Group:Smectite Group
References:ZVMO 132/2 (2003), 68
Type Locality:Levoberezhye Island spar deposit, Nizhnyaya Tunguska River, Evenkiya Region, Siberia, Russia

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