Graphite. Sample of graphite (grey) in its host rock. Graphite is an allotrope of carbon and its most stable form under standard conditions | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / PETR JAN JURACKA |
Taille de l’image : | 5187 px × 3463 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |