sedimentary

Fossilized Coprolite

Coprolite (fossilized feces)

AI-generated identification · may be incorrect

Hardness: 5.0-6.0 on Mohs scale; Color: Brown, tan, reddish-gray; Luster: Dull to earthy; Lithified structure; Presence of mineral replacements like phosphate or quartz.

Hardness: 5
Color: Brown, tan, reddish-gray
Luster: Dull to earthy

Identified June 27, 2026More sedimentary →

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Physical properties

Hardness: 5.0-6.0 on Mohs scale; Color: Brown, tan, reddish-gray; Luster: Dull to earthy; Lithified structure; Presence of mineral replacements like phosphate or quartz.

Formation & geological history

Formed through the fossilization of animal droppings. Over millions of years, the organic material is replaced by minerals, typically calcium phosphate or silicates, often in sedimentary environments where rapid burial occurs.

Uses & applications

Scientific research, paleontological study, jewelry (when polished), and as educational or novelty collector items.

Geological facts

Coprolites provide crucial information about the diet and habitats of prehistoric animals, including dinosaurs and ancient marine life. They are essentially 'time capsules' of prehistoric digestive systems.

Field identification & locations

Identify by its distinct cylindrical, coiled, or lumpy shape and the 'tongue test' (fossilized bone and coprolite often stick slightly to the tongue due to porosity). Commonly found in sedimentary rock layers known for vertebrate fossils.