sedimentary
Limestone
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, typically yellow to gray in color, dull to earthy luster, and reacts with hydrochloric acid.
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Physical properties
Hardness of 3 on the Mohs scale, typically yellow to gray in color, dull to earthy luster, and reacts with hydrochloric acid.
Formation & geological history
Formed through the accumulation of organic remains like shells and coral, or chemical precipitation in marine environments.
Uses & applications
Widely used in construction, production of cement, agriculture, and as a dimension stone.
Geological facts
Limestone often contains fossils and can form massive geological formations such as caves and karst landscapes.
Field identification & locations
Identified easily by its reaction with acid and soft texture; found abundantly worldwide in sedimentary basins.
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Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
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Shale (clastic sedimentary rock)
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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