![](http://www.alamy.com/thumbs/6/F60E011B-1CA5-4E9E-88EF-495496AFD3D0/2EJ9GP7.jpg)
heulandite mineral sample
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Photo credit: © WireStock / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: aluminium, calcium, cations, crystal, geology, heulandite, hydrous, mineral, mining, monoclinic, ore, silicate, sodium, tectosilicate, vitreous