Hand sample of pegmatite, a coarsely grained intrusive igneous rock with a composition similar to granite. Pegmatite has phaneritic texture; mineral grains are of nearly equal size and are visible to the naked eye. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Schneider, Mark A. |
Taille de l’image : | 4256 px × 2848 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |