مواد معدنی/Calcium carbonate

is a chemical compound with the formula CaCO3. It is a common substance found in rocks as the mineral scalcite and aragonite (most notably as limestone, which contains both of those minerals. Alternatively, calcium carbonate is prepared from calcium oxide. Water is added to give calcium hydroxide then carbon dioxide is passed through this solution to precipitate the desired calcium carbonate, referred to in the industry as precipitated calcium carbonate. Calsium carbonate is one of the most widely used minerals which is used in paint, paper, and plastic, medicine industry.