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ATHENA

MINERALOGY

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Mineral: UMBRIANITE
Formula: K7Na2Ca2[Al3Si10O29]F2Cl2
Crystal System: Orthorhombic
IMA Number: 2011-074
References: EJM 25 (2013), 655
Type Locality: Cava Vispi (Vispi quarry), San Venanzo, Terni, Umbria, Italy

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