Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:SWINEFORDITE
Formula:(Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2 · 2H2O
Crystal System:Monoclinic
Strunz Nr:8/H.19-60
Group:Smectite Group
References:AM 60 (1975), 540; HB2/2 (1995)
Type Locality:Foote mine, Kings Mt, Cleveland Co., North Carolina, USA

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