Where is Fossilized Coral found?
Coral (various species)
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Open the appFossilized Coral occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Fossilized Coral
Florida, USA
Known for its agatized coral, particularly the 'Florida Agatized Coral' which is the state stone. Found in Miocene-Pliocene age deposits, often in riverbeds and gravel pits.
Indonesia (Sumatra)
Produces a wide variety of fossilized corals, often with vibrant colors and intricate patterns, from Cenozoic marine sediments.
Morocco
Known for Devonian-age fossil corals, often found in limestone formations.
Australia (Western Australia, Queensland)
Various locations yield fossil corals from different geological periods, including Permian and Mesozoic reefs.
United Kingdom (various locations)
Carboniferous and Devonian coral fossils are found in limestone quarries and coastal exposures.
USA (Michigan, New York, Indiana)
Devonian and Silurian coral fossils (e.g., Petoskey Stone in Michigan, a rugose coral) are common in these regions.
Collecting tips
- Look in Sedimentary Rocks. Focus your search on areas with ancient marine sedimentary rock formations, especially limestones, shales, and conglomerates that indicate past shallow marine environments.
- Identify Coral Reef Indicators. Look for other marine fossils (e.g., brachiopods, crinoids, mollusks) that often co-occur with coral reefs, indicating a favorable environment for coral growth and preservation.
- Examine Weathered Surfaces. Weathering can sometimes expose the internal structures of fossilized coral, making them more visible on rock surfaces.
- Check Gravel Beds and River Deposits. In some regions, fossilized coral can be found as 'float' in gravel beds, river deposits, or glacial till, having been eroded from its original bedrock.
- Observe Patterns and Textures. The key to identifying fossilized coral is recognizing the characteristic patterns of corallites, septa, and growth structures that distinguish it from other rocks or chert.
Quick Check
- Color:
- Variable, often with distinct coral patterns
- Luster:
- Vitreous to waxy (polished), dull (unpolished)
- Streak:
- White
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