Voltaite Alunogen Image

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Alunogen, Voltaite

Large Alunogen Image

Mineral:

Alunogen: Al2(SO4)3·17(H2O)
Voltaite: K2Fe++5Fe+++3Al(SO4)12·18(H2O)

Comments:

Dark greenish-black crystals of voltaite on white alunogen.

Location:

Carola Mine, Freital, Dresden, Saxony, Germany.

Scale:

Picture size 4 mm.

Copyright:

© Thomas Witzke / Abraxas-Verlag

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