sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate)
AI-generated identification · may be incorrectHardness 3 on Mohs scale, grayish to tan color, dull luster, microcrystalline or clastic structure, excellent cleavage in calcite crystals, specific gravity 2.7.
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Physical properties
Hardness 3 on Mohs scale, grayish to tan color, dull luster, microcrystalline or clastic structure, excellent cleavage in calcite crystals, specific gravity 2.7.
Formation & geological history
Formed through the accumulation and compaction of organic carbonate debris like shells and coral in shallow marine environments over millions of years.
Uses & applications
Widely used in the construction industry as crushed stone for road base, building stone, and for manufacturing cement and agricultural lime.
Geological facts
Limestone often preserves delicate ancient marine fossils and forms dramatic landscapes like caves and karst topography through chemical weathering.
Field identification & locations
Easily identified by its characteristic effervescence when exposed to dilute hydrochloric acid; found globally in sedimentary basins and ancient sea beds.
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