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ATHENA

MINERALOGY

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Mineral: GRENMARITE
Formula: (Na,Ca)4(Mn,Na)(Zr,Mn)2(Zr,Ti)(Si2O7)2(O,F)2
Crystal System: Monoclinic
Group: Seidozerite supergroup. Rinkite group
IMA Number: 2003-024
References: EJM 16 (2004), 971
Type Locality: Vesle Arøya (Aro), Langesundsfjord, Larvik, Norway

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