Simple Description

A sedimentary rock - chemical name Calcium Carbonate, CaCO3

Further Detail

Limestone is commonly used as a building material but is affected by acid rain. It turns into the metamorphic rock marble when subjected to high temperature and pressure under the Earth's crust. Limestone can be thermally decomposed to form calcium oxide (quicklime).

Related Words:

• Sedimentary Rock
• Acid rain

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