sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (CaCO3)
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, grayish-white to tan color, dull luster, cryptocrystalline structure with visible fossil fragments, specific gravity around 2.7.
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Physical properties
Hardness of 3 on the Mohs scale, grayish-white to tan color, dull luster, cryptocrystalline structure with visible fossil fragments, specific gravity around 2.7.
Formation & geological history
Formed from the accumulation and compaction of calcareous skeletal fragments of marine organisms in shallow, warm marine environments over millions of years.
Uses & applications
Widely used in construction, production of cement, agriculture for soil neutralization, and as a decorative building stone.
Geological facts
Limestone often preserves ancient marine ecosystems and can contain crinoids, brachiopods, and bryozoans.
Field identification & locations
Easily identified by its reaction to dilute hydrochloric acid, which causes effervescence due to calcite content. Found worldwide in sedimentary basins.
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