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What organic materials make up limestone?

What type of mineral and what percent of it determine if a rock is limestone? (Refer to Site 2)

Answer :

Final answer:

Limestone is primarily made up of calcite formed from the remains of marine organisms. The type of limestone is determined by the percentage of calcite present.


Explanation:

Organic Materials in Limestone

Limestone is primarily made up of the mineral calcite, which is formed from the remains of marine organisms such as shells, corals, and microorganisms. These organic materials gradually accumulate and get compressed to form limestone over millions of years.

Determining the Type of Limestone

The type of mineral present in limestone is calcite, which is a carbonate mineral. Limestone can be classified based on its calcite content. High-calcium limestone contains a high percentage of calcite (over 95%), while low-calcium limestone has a lower calcite content (around 80-95%).


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