AM_Heulandite-Ba Formula: Ba1.098 Ca.784 K.82 Na.1 (Si13.5 Al4.5) O46.742 H37.688 Name: Heulandite-Ba Unit cell: 17.738 17.856 7.419 90.0 116.55 90.0 , V=2102.02 Space group: C12/M1 (12)

Larsen A O , Nordrum F S , Dobelin N , Armbruster T , Petersen O V , Erambert M , European Journal of Mineralogy , 17 (2005) p.143-153, Heulandite-Ba, a new zeolite species from Norway, Locality: Northern Ravnas silver prospect, southern Vinoren, Flesberg community,, Buskerud county, Norway (Kongsberg ore district)