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ATHENA

MINERALOGY

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Mineral: ESPERANZAITE
Formula: NaCa2Al2(As5+O4)2F4(OH).H2O
Crystal System: Monoclinic
IMA Number: 1998-025
References: CM 37 (1999), 67; HB4 (2000); AM 85 (2000), 263; MR 31 (2000), 365
Type Locality: La Esperanza tin mine, Zaragoza, Durango, Mexico

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