Where is Fossilized Coral found?
Scleractinia (fossilized)
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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.
Indonesia
Produces a wide variety of fossilized corals, often with vibrant colors and intricate patterns, from various geological periods.
Morocco
Known for Devonian-age fossil corals, often found in limestone formations.
Utah, USA
Various locations yield fossil corals, often silicified, from different geological periods.
Australia
Significant deposits of fossilized corals, particularly in Western Australia and Queensland.
China
Produces a range of fossil corals, often used in carvings and ornamental items.
Collecting tips
- Look in Sedimentary Rocks. Fossilized coral is typically found in sedimentary rock formations, especially those associated with ancient marine environments, such as limestones, shales, and sandstones that were once seafloors.
- Identify Coral Structures. Look for characteristic coral patterns, such as radial septa, tabulae, and corallites. These structures are often visible on weathered surfaces or in broken pieces.
- Check for Hardness. Silicified coral will be significantly harder than un-fossilized coral or limestone. It should scratch glass and not be easily scratched by a knife (Mohs hardness 6.5-7).
- Observe Luster and Translucency. Polished or freshly broken surfaces may exhibit a waxy to vitreous luster and some translucency, characteristic of chalcedony or agate.
- Geological Maps and Local Knowledge. Consult geological maps for areas known to have marine sedimentary deposits from periods when corals were abundant (e.g., Devonian, Carboniferous, Permian, Mesozoic, Cenozoic). Local rockhounding clubs or paleontological societies can provide valuable information on specific collecting sites.
Quick Check
- Color:
- Variable, often with distinct coral patterns
- Luster:
- Waxy to vitreous (polished), dull (unpolished)
- Streak:
- White
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