Limestone.
The chemical name for limestone is calcium carbonate.
Calcium carbonate makes limestone, while magnesium carbonate makes dolomite.
Calcium Carbonate(CaCO3)Egg shell(80-95% CaCO3), plus phosphorus and magnesium, andtrace amounts of sodium, potassium, zinc, manganese, iron, and copper.Sea shellInterestingly, the accumulations in lime stone are very importantto olive trees(roots ~4ft deep) ... live for ~3 thousand years.In humans, the deficiency of calcium, is attributable to over 140 diseases.
You can calculate the value of calcium carbonate in limestone by determining the percentage of calcium carbonate present in the sample and then multiplying that by the market price per ton of calcium carbonate. The formula is: Value = (Percentage of calcium carbonate / 100) x Market price per ton.
To test limestone for its calcium carbonate (CaCO3) content, you can use an acid test. By adding a few drops of dilute hydrochloric acid to a sample of limestone, a reaction will occur if it contains calcium carbonate, producing bubbles of carbon dioxide gas. The intensity of the reaction can indicate the purity of the limestone.
The name for calcium carbonate is calcium carbonate. The formula is CaCO3
a lime stone is sedimenty rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3).
Sea shells are largely composed of CaCO3 or Calcium Carbonate. This is also the main component of lime used to supply Calcium to soils which is readily leached from soils above 700mm annual rainfall. Calcium Carbonate is the main constituent in mollusc shells, mammalian hair and nails, exoskeleton of insects, bills and toenails of birds as it can be accumulated slowly in the body of an animal and used in animal parts that require hardness.
In laboratory only one form; in the nature many minerals has the formula CaCO3. See also: http://en.wikipedia.org/wiki/Calcium_carbonate and http://www.webmineral.com/cgi-bin/search/search.pl.
Lithographic limestone is primarily composed of calcium carbonate (CaCO3), with small amounts of clay minerals and organic matter. These impurities can affect the color and texture of the stone, making it suitable for lithographic printing.
The common name of Calcium carbonate may be Chalk, but chemically that's not true, if it is the blackboard writing chalk. This chalk is actually Calcium sulfate, which is mistaken as Calcium carbonate, as its manufacturing process uses Calcium carbonate.So, I think the common name for chalk should be Limestone, which is the most common mineral form of this compound.
Calcium Carbonate is insoluble chemical compound so all you have to do is decant or filter.... think about this, how do you separate sea shells from water? sea shells are made from calcium carbonate, that's why you see then on the beach all the time because they are insoluble.