Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:OFFRETITE
Formula:CaKMg[Al5Si13O36] · 16H2O
Crystal System:Hexagonal
Strunz Nr:8/J.26-70
Group:Zeolite Group
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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