Pompon Agate
by Natural History Museum, London/science Photo Library
Title
Pompon Agate
Artist
Natural History Museum, London/science Photo Library
Medium
Photograph - Photograph
Description
Pompon, or thunder egg, 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.
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September 25th, 2018
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