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ATHENA

MINERALOGY

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Mineral: OFFRETITE
Formula: CaKMg[Al5Si13O36].16H2O
Crystal System: Hexagonal
Group: Zeolite group
IMA Number: 1997 s.p.
References: L 12 (1982), 5; HB2/2 (1995); AM 83 (1998), 577; EJM 10 (1998), 1037
Type Locality: Mont Semiol (Mt Semiouse), Loire, France

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