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ATHENA

MINERALOGY

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Mineral: ROUMANITE
Formula: (Ca,Na,REE,▢)7(Nb,Ti)[Si2O7]2OF3
Crystal System: Monoclinic
Group: Seidozerite supergroup. Rinkite group
References: CM 48 (2010), 17
Type Locality: Rouma Island, Los Islands (Iles de Los), Conakry, Guinea

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