sedimentary
Limestone with Fossil Fragments
Bioclastic Limestone (CaCO3)
Hardness: 3-4 (Mohs); Color: Tan/Light Brown; Luster: Dull/Earthy; Structure: Clastic fossiliferous texture; Cleavage: None (conchoidal/irregular fracture)
- Hardness
- 3-4 (Mohs)
- Color
- Tan/Light Brown
- Luster
- Dull/Earthy
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Physical properties
Hardness: 3-4 (Mohs); Color: Tan/Light Brown; Luster: Dull/Earthy; Structure: Clastic fossiliferous texture; Cleavage: None (conchoidal/irregular fracture)
Formation & geological history
Formed in shallow marine environments through the accumulation of shell, coral, and algal debris over millions of years.
Uses & applications
Used in construction, cement production, agriculture for soil neutralization, and as a decorative stone.
Geological facts
Limestone makes up about 10% of the total volume of all sedimentary rocks. It often contains preserved remains of ancient sea life.
Field identification & locations
Identified by its reaction to dilute hydrochloric acid (fizzing) and the presence of visible fossilized skeletal fragments. Common in sedimentary basins worldwide.
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