What is Fossil Coral?
Formation: Fossil coral is created when prehistoric coral colonies, which are marine animals, are gradually replaced with minerals like calcite, chalcedony, or silica over millions of years. This process occurs under specific geological conditions, typically in sedimentary rock layers.
- Age: Most fossil coral dates back to the Devonian period, around 400 million years ago, though some may be younger.
---
Polished Fossil Coral
Appearance: When polished, fossil coral reveals intricate, lace-like patterns that reflect the original coral's skeletal structure. The patterns can resemble flowers or starbursts, giving it the nickname "flower stone."
Love this polished fossil coral! The little polyps “flowers” so beautiful!
— Geology Tweets (@GeologyTime) September 9, 2024
Photo © davidhunter01 pic.twitter.com/AkUASseVH8