Ferberite crystals. This iron wolframite mineral occurs as granular masses and slender prismatic crystals as seen here. It is a minor ore of tungsten.

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Ferberite crystals. This iron wolframite mineral occurs as granular masses and slender prismatic crystals as seen here. It is a minor ore of tungsten. This sample is from Kifurwe, Rwanda, and measures 8cm long. From Collection Royal Museum for Central Africa, Tervuren, Belgium.

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Size: 5138px × 3425px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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