What is marble? Detailed answer

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What is marble? Detailed answer

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What is marble?

Nature is a wonderful baker. Deep underground is her furnace, heated thousands of years ago by huge rising masses of molten rock. In this furnace, she heated and, due to the monstrous pressure, turned limestone into hard marble.

The purest marble is white. Various impurities often give it shades of pink, red, yellow or brown or form wavy lines or spots in it. Crystals of various colors, caught in marble, sparkle and sparkle in the sun. In some pieces of marble, the remains of fossils give it extra charm.

Marble is also sometimes referred to as other stones that are polished and used in construction, such as granite, onyx and porphyry. However, real marble is limestone, which has passed into a crystalline state during natural processes.

To extract marble, a special machine cuts a series of channels or slots in the stone massif, which can reach a depth of 2-3 meters and a length of 18-24 meters. Explosions should not be used, as this may destroy or crack the marble. The blocks are then carefully removed by huge cranes.

To cut raw stone, a large saw without teeth is used, on which water and sand are poured during operation. Due to the friction of the steel blade and sand, the block is quickly cut into pieces of the desired size.

Sometimes a wire saw is used instead of a hard blade. The pieces of marble are then placed on a round-shaped grinding machine, where they are fixed in place. Sand and water flow over the rotating surface of the machine, leveling the surface of the marble. Then, to make the surface smooth, the marble is polished additionally. The final polishing is done with a mixture of tin oxide and oxalic acid, which is applied to the marble surface using a polishing wheel.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which Indian prophet has been unofficially canonized by the church through a character in the parable?

In medieval Europe, the parable of Barlaam and Josaph was popular. The plot was that the young Indian prince Iosaph met Saint Barlaam and converted to Christianity. This story was nothing more than an adaptation of the life of the Buddha. We can say that the Buddha was unofficially canonized, since Iosaph is included in the Orthodox liturgical calendar (August 26) and the list of martyrs of the Catholic Church (November 27).

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