Description: This is a collection of agatized fossil coral from Tampa Bay, Florida cut in half to reveal the geodes and formations inside. Florida agatized corals are the skeletal remains of the coral animal that died 25 to 38 million years ago. The actual skeletal structures are sometimes easy to see in some specimens.The skeletons consist of limestone (CaCO3 ) and the coral becomes agatized when the coral voids are filled with silica-rich water and the limestone is replaced by chalcedony quartz (SiO2 ) and common opal.Chalcedony that is translucent and colored is called agate.The replacement process takes millions of years and results in what geologists refer to as a pseudomorph –a crystal consisting of one mineral, but having the form of another which it has replaced. Occasionally, very small clear visible quartz crystals will form after the chalcedony layer; but, it is the richly colorful agate layer that we find so attractive.This coral is 25-35 million years old. Own a piece of unique fossil and mineral history for your collection.The 8th-14th pictures were taken with the specimens wet to bring out the agate coloring.Shipping to Lower 48 states only.
Price: 65 USD
Location: Gainesville, Florida
End Time: 2024-11-24T19:05:42.000Z
Shipping Cost: 10 USD
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All returns accepted: ReturnsNotAccepted
Country/Region of Manufacture: United States
