Coltan, also Columbite, Oka, Quebec.Coltan is a dull black metallic ore from which are extracted the elements niobium and tantalum. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Degginger, Phil |
Bildgröße: | 6491 px × 3997 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |