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MINERALOGY

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Mineral: HEULANDITE-Ba
Formula: (Ba,Ca,Sr,K,Na)5Al9Si27O72.22H2O
Crystal System: Monoclinic
Group: Zeolite group. Heulandite series
IMA Number: 2003-001
References: EJM 17 (2005), 143; AM 90 (2005), 1945
Type Locality: Northern RavnÄs (Ravnas) prospect, southern Vinoren, Kongsberg ore district, Flesberg community, Buskerud county, Norway

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