sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (CaCO3)
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, typically gray, tan, or yellowish with visible fossil fragments, dull to earthy luster.
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Physical properties
Hardness of 3 on the Mohs scale, typically gray, tan, or yellowish with visible fossil fragments, dull to earthy luster.
Formation & geological history
Formed from the accumulation and compaction of organic carbonate debris and skeletal fragments in shallow marine environments over millions of years.
Uses & applications
Used extensively in construction, production of lime and cement, and as a decorative building stone.
Geological facts
Limestone frequently contains well-preserved ancient marine fossils such as crinoids, brachiopods, and corals, providing a clear record of past sea life.
Field identification & locations
Identified easily by its reaction to dilute hydrochloric acid, which causes it to fizz; found worldwide in sedimentary basins.
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