Agate slice
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Agate slice
Agate slice. Agate is an aggregate of different forms of silica (silicon dioxide, 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. Quartz (centre) is the crystalline form of silica. The colours and arrangements of microcrystals are influenced by changes in pressure, temperature, and mineral content that occur during the formation process
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Media ID 6366263
© GAVIN KINGCOME/SCIENCE PHOTO LIBRARY
Agate Amorphous Chalcedony Concentric Cross Section Crystal Crystalline Crystals Earth Science Gem Stone Geode Geological Mineral Mineralogy Pattern Patterned Patterns Polished Quartz Rings Silica Silicon Dioxide Slice Stone Surface Variegated Section Sectioned
EDITORS COMMENTS
This print showcases the mesmerizing beauty of an Agate slice, a stunning geological wonder. Agate is formed through a fascinating process where different forms of silica come together to create concentric bands within a geode. The geode is created when liquid silica precipitates onto the inner surface of an empty pocket in a host rock. The outer layers of this Agate slice exhibit variegated patterns made up of chalcedony, which is amorphous or non-crystalline silica. As we move towards the center, these layers gradually become more crystalline, culminating in the presence of quartz at its core – the crystalline form of silica. The colors and arrangements seen on this cross-section are influenced by various factors such as changes in pressure, temperature, and mineral content during its formation. Each ring tells a unique story about the conditions it experienced throughout its growth. This polished gemstone reveals intricate details that can only be appreciated under close inspection. Its cut and crystal structure expose macrocrystals and microcrystals that add depth and complexity to its overall appearance. With this remarkable photograph from Science Photo Library, we gain insight into Earth's geological processes while being captivated by nature's artistry displayed within every sectioned layer of this exquisite agate slice.
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