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ATHENA

MINERALOGY

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

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