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Cronstedtite : Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4

Copyright © Thomas Witzke and Abraxas-Verlag
 
 
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Cronstedtite : Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4

Copyright © Thomas Witzke and Abraxas-Verlag  - This image is copyrighted. Unauthorized reproduction prohibited.

Black prismatic crystals of cronstedtite. Picture size 6 mm. Photographer and collection Thomas Witzke.

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