Owl - coll. P.P. ATHENA

MINERALOGY
mlevy
Mineral:SAPONITE
Formula:(Ca0.5,Na)0.3(Mg,Fe2+)3(Si,Al)4O10(OH)2 · 4H2O
Crystal System:Monoclinic
Strunz Nr:8/H.20-20
Group:Smectite Group
References:EJM 6 (1994), 99; HB2/2 (1995)
Type Locality:Lizard Point, Cornwall, England

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