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File:Agatized coral (Tertiary; Withlacoochee River, Georgia, USA) 17.jpg

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Agatized coral

Summary

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Description
English: Agatized coral from the Tertiary of Georgia, USA.

Parts of Georgia and Florida are known for having geodized, agatized corals. The original coral skeletons were composed of aragonite (CaCO3, calcium carbonate), a polymorph of calcite. The fossil corals have since been silicified and geodized, resulting in chalcedony-lined cavities / vugs.

Thie example is remarkable for its rainbow colors.

Stratigraphy: supposedly from marine sedimentary rocks in the Hawthorn Group, Tertiary

Locality: undisclosed / unrecorded site attributed to the Withlacoochee River, near the Georgia-Florida border, far-southern Georgia, USA

Info. at:

www.apalachee-minerals.com/agatizedcoral1
Date
Source https://www.flickr.com/photos/47445767@N05/54566813980/
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/54566813980. It was reviewed on 5 June 2025 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

5 June 2025

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current10:57, 5 June 2025Thumbnail for version as of 10:57, 5 June 20254,000 × 2,870 (5.24 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/54566813980/ with UploadWizard

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