Agate In Amethyst is a photograph by Natural History Museum, London/science Photo Library which was uploaded on September 16th, 2018.
Agate In Amethyst
Agate in amethyst. . Agate is an aggregate of different forms of silica (SiO2) that have formed concentric bands within a geode. A geode forms when... more
Title
Agate In Amethyst
Artist
Natural History Museum, London/science Photo Library
Medium
Photograph
Description
Agate in amethyst. . 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. The outer layers are variegated forms of chalcedony (amorphous or non-crystalline silica), with the layers becoming more crystalline towards the centre.
Uploaded
September 16th, 2018
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