MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Quartz boulder, close-up. This silicate mineral is a form of silica (silicon dioxide). Photographed at the Geoscope geological park, located between Les Monts-Vert and Albaret-Sainte-Marie, central France.
Model release not required. Property release not required.