MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Silica rock crystal samples. Large hexagonal pyramidic crystals of silicon dioxide (silica) that formed inside granite. These samples are part of the Geoscope geological park, located between Les Monts-Vert and Albaret-Sainte-Marie, central France.
Model release not required. Property release not required.