Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:GJERDINGENITE-Fe
Formula:K2(Fe2+,Mn2+)(Nb,Ti)4(Si4O12)2(O,OH)4 · 7-8H2O
Crystal System:Monoclinic pseudo Orthorhombic
Strunz Nr:8/E.07-70
Group:Labuntsovite Group
References:CM 40/6 (2002), 1629; EJM 14 (2002), 165
Type Locality:Gjerdingselva, Lunner, Oppland, Oslo Region, Norway

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