Marble is found in nature in the form of rocks. These rocks are formed from limestone. The tremendous heat and pressure beneath the earth’s surface converts limestone into marble rocks. If you analyse the chemical composition of marble, you will fine that it is mostly calcium carbonate. Some varieties of marble contain 99% calcium carbonate. Marble acquires a variety of colors due to the presence of some salts of aluminum and magnesium in it.
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A Marble statue
            Pure marble is snow whit. White marble has been in use for construction of buildings since ancient times. The people of Greece  and Egypt 
            Natural boulders of marble are cut into big slabs by machines. These big pieces are brought to workshop where they are cut into desired sizes. Marble obtained from rocks is initially coarse. To make the surface smooth, it is polished with the help of special machines, after which it is ready for se. because of its beauty, it as always been a favorite material for sculpture, architecture and many other purposes. Famous sculptors like Michelangelo and Leonardo da Vinci used marble for many of their works.

 
 
 
 
 
 
 
 
