Bournonite (copper lead antimony sulphide),or 'cog-wheel ore'. Cog wheel ore contains the mineral chromite,although it is difficult to extract from crystals. Natural History Museum,London,UK | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Natural History Museum, London |
Bildgröße: | 2949 px × 2962 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |