sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (CaCO3)
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, colors range from gray to dark brown, dull to earthy luster, composed primarily of calcite with visible fossil fragments.
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Physical properties
Hardness of 3 on the Mohs scale, colors range from gray to dark brown, dull to earthy luster, composed primarily of calcite with visible fossil fragments.
Formation & geological history
Formed in marine environments through the accumulation and compaction of shell, coral, and algal debris over millions of years.
Uses & applications
Used primarily in construction, crushed stone for road base, cement production, and as a decorative building material.
Geological facts
Fossiliferous limestone often contains well-preserved ancient marine fossils like brachiopods and crinoids, providing a window into past ecosystems.
Field identification & locations
Easily identified by its reaction to dilute hydrochloric acid (effervescence) and visible embedded fossil fragments.
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