sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (CaCO3)
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, grayish to brownish color, dull to earthy luster, and reacts with dilute hydrochloric acid due to its calcite composition.
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Physical properties
Hardness of 3 on the Mohs scale, grayish to brownish color, dull to earthy luster, and reacts with dilute hydrochloric acid due to its calcite composition.
Formation & geological history
Formed from the accumulation and compaction of marine organism shells, coral, and skeletal fragments in shallow marine environments over millions of years.
Uses & applications
Used widely in the construction industry as crushed stone for road base, in the production of cement, and as a decorative building material.
Geological facts
Limestone often preserves ancient marine life, providing scientists with critical data about prehistoric ocean ecosystems and climate history.
Field identification & locations
Easily identified in the field by visible fossil fragments and its characteristic fizzing reaction when exposed to acid; found globally in ancient seabed regions.
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