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ATHENA

MINERALOGY

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Mineral: GJERDINGENITE-Mn
Formula: (K,Na)2(Mn2+,Fe2+)(Nb,Ti)4(Si4O12)2(O,OH)4.6H2O
Crystal System: Monoclinic pseudo Orthorhombic
Group: Labuntsovite supergroup. Kuzmenkoite group
IMA Number: 2003-015
References: EJM 16 (2004), 979
Type Locality: Gjerdingselva, Lunner, Oppland, Oslo Region, Norway

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