Alunogen Mineral Gallery

Alunogen Mineral Gallery
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Alunogen Minerals


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Alunogen Mineral Gallery With 3 Images

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Alunogen: Al2(SO4)3·17(H2O)  
Jarosite: KFe+++3(SO4)2(OH)6

Comments: Colorless to white, tabular crystals alunogen on reddish jarosite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

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Alunogen: Al2(SO4)3·17(H2O)  
Metavoltine: K4Na4(Fe++,Zn)Fe+++6(SO4)12O2·20(H2O)

Comments: Yellow metavoltine with white alunogen.
Location: Carola Mine, Freital, near Dresden, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

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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.
© Thomas Witzke / Abraxas-Verlag
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