sedimentary
Limestone with Fossil
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness of 3 on Mohs scale, typically tan to gray in color, dull to earthy luster, and reacts with dilute hydrochloric acid.
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Physical properties
Hardness of 3 on Mohs scale, typically tan to gray in color, dull to earthy luster, and reacts with dilute hydrochloric acid.
Formation & geological history
Formed through the accumulation of skeletal fragments of marine organisms or chemical precipitation in shallow marine environments over millions of years.
Uses & applications
Widely used in construction, cement production, agriculture to neutralize soil acidity, and as a dimension stone.
Geological facts
Limestone frequently preserves ancient marine fossils, providing crucial insights into prehistoric ecosystems and evolutionary history.
Field identification & locations
Identify in the field by its lighter tan or gray color, fine-grained texture, and characteristic effervescence when exposed to acid.
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