Barrerite / Barrerit
Na2(Si7Al2)O18·6H2O
White crystal of barrerite. Kuiu Nord, Rocky Pass, Alaska, USA. Picture size 8 mm. Collection and foto Thomas Witzke.
Barrerit-Kristall. Kuiu Nord, Rocky Pass, Alaska, USA. Bildbreite 8 mm. Sammlung und Foto Thomas Witzke.
© Thomas Witzke / Stollentroll