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are widely and diversely used. the element is a constituent of lime (see calcium oxide calcium oxide, chemical compound, cao, a colorless, cubic crystalline or white amorphous substance. it is also called lime, quicklime, or caustic lime, but commercial lime often contains impurities, e.g., silica, iron
dolomite crystals, the crystalline texture being the result of metamorphism of limestone by heat and pressure. ..... click the link for more information. , limestone limestone, sedimentary rock wholly or in large part composed of calcium carbonate. it is ordinarily white but may be colored by impurities, iron...
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