Limestone is a common type of carbonate sedimentary rock. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate. Limestone forms when these minerals precipitate out of water containing dissolved calcium
Calcium Oxide (Lime) is made by thermal decomposition of high purity limestone above 900�°C, the process is called calcinations or lime burning. It is also referred to as burnt lime or quick lime.
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