Where is Fossilized Scleractinian Coral found?

Fossilized Scleractinian 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 Scleractinian Coral

Collecting tips

1. Look in Sedimentary Rocks. Fossil corals are found in sedimentary rock formations, especially limestones, shales, and sandstones that represent ancient marine environments. Look for outcrops or exposures of these rock types.
2. Identify Coral Reef Environments. Focus on geological areas that were once shallow, warm marine environments, as these are ideal for coral growth and subsequent fossilization. Paleogeographic maps can be helpful.
3. Examine Weathered Surfaces. Fossils often weather out of their host rock. Look for distinctive coral patterns on the surface of rocks or loose fragments in stream beds and eroded areas.
4. Check for Silicification. Agatized coral will be harder than the surrounding limestone and will not react to acid. Test with a steel file (it should scratch steel) or a drop of dilute HCl (it should not effervesce).
5. Consult Geological Maps and Local Guides. Geological maps can pinpoint formations known to contain marine fossils. Local rockhounding clubs or guides can provide specific collecting localities.

Quick Check

Color:

Variable (white, gray, brown, black, pink, red, yellow, blue), often patterned.

Luster:

Vitreous to waxy.

Streak:

White.

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