Chalcedony
Polished slab of chalcedony with radiating structure. Chalcedony or agate is a variety of cryptocrystalline quartz (silicon dioxide)
Picture No
10703719
Media ID
47586307
Size
4996px x 3954px
(12.0MB)
Credit
Mary Evans / Natural History Museum
Source
Photograph from the Natural History Museum Collection
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Chalcedony Crystalline Dioxide Micro Mineral Polished Quartz Radial Radiated Silicate Silicon Slab Tectosilicate
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