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Preiswerkite Image

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 Preiswerkite

Large Preiswerkite Image

Mineral: Preiswerkite: NaMg2Al3Si2O10(OH)2
Comments: Pale green fine grained preiswerkite masses in dark amphibolite rock.
Location: Geisspfad, Binnental, Valias, Switzerland.
Scale: See Photo.
Copyright: © Jeff Weissman / Photographic Guide to Mineral Species
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