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Enhydro agate
From Wikipedia, the free encyclopedia
Enhydro agates are nodules, agates, or geodes with water trapped inside its cavity.[1] Enhydros are closely related to fluid inclusions, but are composed of chalcedony. The formation of enhydros is still an ongoing process, with specimens dated back to the Eocene Epoch.[2] They are commonly found in areas with volcanic rock.[3]
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