sedimentary
Fossiliferous Limestone
Calcium carbonate with embedded marine fossils (CaCO3)
AI-generated identification · may be incorrectHardness 3 on Mohs scale, dark gray to black color, dull luster, microcrystalline to fine-grained crystal structure, exhibits visible fossil fragments.
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Physical properties
Hardness 3 on Mohs scale, dark gray to black color, dull luster, microcrystalline to fine-grained crystal structure, exhibits visible fossil fragments.
Formation & geological history
Formed through the accumulation and cementation of marine organism remains in shallow tropical marine environments over millions of years.
Uses & applications
Used in construction, cement production, agriculture, and as decorative architectural stone or educational fossil specimens.
Geological facts
Contains preserved remains of ancient sea life such as crinoids, brachiopods, or small gastropods visible as circular cross-sections.
Field identification & locations
Identify by its effervescence when tested with dilute hydrochloric acid and the presence of embedded fossil shells; found worldwide in ancient marine sedimentary strata.
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