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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5138 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |