Answer :
Final answer:
Fossiliferous limestone known as calcernite consists primarily of the mineral calcite ([tex]CaCO_{3}[/tex]). Option 1 is correct.
Explanation:
Calcernite, a type of fossiliferous limestone, is primarily composed of the mineral calcite ([tex]CaCO_{3}[/tex]). This sedimentary rock is rich in fossils, often preserving the remains of marine organisms such as shells, corals, and microorganisms. The calcite content in calcernite indicates its formation through the accumulation and lithification of calcium carbonate-rich debris over time.
The fossils embedded within this limestone provide valuable insights into past environments and the organisms that inhabited them. Calcernite's composition and fossil content make it a significant geological resource for understanding Earth's history and the ancient life forms that once thrived in marine ecosystems.
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