Agatized Coral Geode Fossil
Fossil Geode for Sale
Common Name: Florida Agatized Coral Fossil
Age: 38 to 25 Million Years old
Formation: Hawthorn Group
Location: Madison County, Florida, USA
This is a super high quality cut and polished Agatized Fossil Coral Geode. Stunning colors of agate. Millions of years of nature at work. These types of corals are highly sought after. Actual specimen pictured & guaranteed authentic & natural with no alterations of dye or heat treatment, etc.
Agatized Fossil Coral is Florida's state stone. The species of coral for the state stone is Montastrea. However, many types of coral species make-up this colorful coral.
They are found in ancient ocean beds, where silica rich groundwater has percolated through them and over time has replaced it's calcium carbonate skeleton with a hard variety of Chalcedony. This leaves the ornamental fossil with a sometimes banded stone look.
It is about 38-25 million years old and from the Oligocene-Miocene period. These fossils are found in a variety of colors- white, gray, brown, black, yellow and red. Different trace minerals in the agate create these colors.
Much of these fossils have been found in the Tampa Bay area, near the Ballast Point. However, more have been found, recently, in North Florida on the Withlacoochee River, in Madison County, Florida.
Size: 2.6" W x 2.8" L x 1.26" Thickness
Item #: C011
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