Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:SHAFRANOVSKITE
Formula:K2Na3(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 · nH2O (n=2.33)
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:8/H.40-30
References:ZVMO 111 (1982), 475; HB2/2 (1995); AM 89 (2004), 1816
Type Locality:Khibina massif, Lovozero massif, Kola Peninsula, Russia

Mineral:SHAFRANOVSKITE FERRIAN = SHAFRANOVSKITE (?)
Formula:H6(Na,K)6(Fe,Mn)3Si9O27 · 3H2O

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