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ATHENA

MINERALOGY

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Mineral: FOGOITE-(Y)
Formula: Na3Ca2Y2Ti(Si2O7)2OF3
Crystal System: Anorthic (Triclinic)
Group: Seidozerite supergroup. Rinkite group
IMA Number: 2014-098
References: MM 81 (2017), 369
Type Locality: Lagoa do Fogo, Fogo volcano, São Miguel Island, Azores, Portugal

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