sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (CaCO3)
AI-generated identification · may be incorrectHardness 3 on Mohs scale, grayish-white to tan color, dull to earthy luster, microcrystalline or granular structure, exhibits effervescence with dilute hydrochloric acid.
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Physical properties
Hardness 3 on Mohs scale, grayish-white to tan color, dull to earthy luster, microcrystalline or granular structure, exhibits effervescence with dilute hydrochloric acid.
Formation & geological history
Formed through the accumulation and compaction of organic carbonate debris, shells, and coral fragments in shallow marine environments over millions of years.
Uses & applications
Used widely in construction as crushed stone, dimension building stone, cement production, and as educational fossil specimens.
Geological facts
Limestone frequently preserves ancient marine fossils, providing crucial insight into prehistoric ocean ecosystems and climate history.
Field identification & locations
Identify in the field by its pale color, fossil inclusions, and strong fizzing reaction when exposed to acid. Commonly found in quarries and sedimentary rock layers worldwide.
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