A sample of a white Calcite (calcium carbonate, CaCO3) crystal containing particles of pyrite, also known as fool's gold (iron disulphide, FeS2). Photographed at Focus Terra, the Earth Science Research and Information Centre of ETH, the Swiss Federal Institute of Technology, Zurich. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Williamson, Mark |
Taille de l’image : | 5128 px × 3408 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |