Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:HEULANDITE-K
Formula:(K,Ca0.5,Na,Mg0.5,Sr0.5)9[Al9Si27O72] · 24H2O
Crystal System:Monoclinic
Strunz Nr:8/J.23-08
Group:Zeolite Group Heulandite series
References:AM 53 (1968), 1120; HB2/1 (1995); EJM 10 (1998), 1037; L 11(1999), 8
Type Locality:Albero Bassi, Vicenza, Italy
Comments:Heulandite series

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