Coyamito agate. Agate is an aggregate of different forms of silica (SiO2) that have formed concentric bands within a geode. A geode forms when the sil

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Coyamito agate. Agate is an aggregate of different forms of silica (SiO2) that have formed concentric bands within a geode. A geode forms when the silica precipitates from liquid onto the inside surface of an empty pocket in a host rock. Specimen approximately centimetres long.

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Size: 4975px × 3513px
Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: agate, amorphous, chalcedony, coyamito, cross, cross-section, cut, dioxide, earth, geode, geological, geology, mineral, mineralogy, pattern, patterned, patterns, polished, science, section, sectioned, silica, silicon, slice, specimen, stone, surface