sedimentary
Limestone with Fossil
Bioclastic Limestone
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, tan to light gray color, dull to earthy luster, microcrystalline structure, and reacts with hydrochloric acid.
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Physical properties
Hardness of 3 on the Mohs scale, tan to light gray color, dull to earthy luster, microcrystalline structure, and reacts with hydrochloric acid.
Formation & geological history
Formed through the accumulation and compaction of marine organism shells and skeletal fragments in shallow warm marine environments over millions of years.
Uses & applications
Used primarily in construction, aggregate, cement production, and soil conditioning.
Geological facts
Fossiliferous limestones often preserve ancient marine life like brachiopods, crinoids, and mollusks from the Paleozoic or Mesozoic eras.
Field identification & locations
Identify in the field by its light color, sedimentary bedding, fossil impressions, and strong effervescence when exposed to dilute acid.
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