Slate sample,light micrograph. Slate is a fine-grained metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Landmann, Patrick |
Taille de l’image : | 5138 px × 3425 px |
Model Release : | Non requis |
Restrictions : | - |