Quartz pebbles in dark carbonaceous matrix from the Carbon Leader Reef,Witwatersrand Basin,South Africa. Primary commodity: Gold,uranium. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NATURAL HISTORY MUSEUM,LONDON |
Taille de l’image : | 6072 px × 4251 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |