Geode interior section

Geode interior section

E425/0852 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: 6.5MB

Price image Pricing

Please login to use the price calculator


This image is part of the feature Rock Art

Credit: DIRK WIERSMA/SCIENCE PHOTO LIBRARY

Caption: Geode interior section. Polarized light micrograph of a thin section through a geode. Layers of chalcedony (banded) surround an interior of quartz crystals. A geode forms when layers of the mineral silica (silicon dioxide) precipitate from liquid onto the inside of rock hollows. Chalcedony, the amorphous or non-crystalline form of silica, forms the outer layers. The final, central part that forms is the pure crystalline form of silica, quartz. The normal appearance of the chalcedony is coloured by impurities with the pure quartz being colourless. The central quartz hollow is about 2 centimetres across.

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

Keywords: agate, chalcedony, crystal, crystalline, crystals, cut, earth science, geode, geological, geology, hollow, light micrograph, mineral, pattern, patterned, patterns, polished, quartz, rock, rocks, section, sectioned, semi-precious, silica, silicon dioxide, stone, surface, thin slice

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