Geode, thin section micrograph

Geode, thin section micrograph

C035/9531 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 50.5MB

Downloadable file size: 3.9MB

Price image Pricing

Please login to use the price calculator


Credit: DIRK WIERSMA/SCIENCE PHOTO LIBRARY

Caption: A geode observed in thin section, photographed with transmitted, polarized light, reveals the details of the precipitation and crystallization of silica in a rock void. Geodes form when chalcedony (silica, SiO2) precipitates from liquids percolating inside an empty void or crack in a host rock. The peripheral layers here formed are amorphous to sub-crystalline silica, while the core is made up of crystalline quartz. Actual width is 44 mm

Release details: Model release not required. Property release not required.

Keywords: amorphous, chalcedony, concentric, cracks, crystalline, crystals, earth science, geode, geology, micrograph, mineral, mineralogy, percolating, polarisation, precipitation, rock, rocks, semi-precious, silica, silicon dioxide, sub-crystalline, thin section

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.