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Both of these can also be distinguished from geological concepts. Granite is a igneous rock, also called acid crystal deep diagenetic rock. It is the most widely distributed type of rock in igneous rocks. It consists of feldspar, quartz and mica. Its composition is dominated by silica, accounting for about 65% to 75% of rock. Hard and dense. The so-called igneous rock is the magma formed by the underground lava or the volcanic lava that has been condensed and crystallized. The content of silica in the igneous rock, the nature of the feldspar, and its content determine the properties of the stone. When the content of silica is more than 65%, it belongs to acidic rock. In this type of rock, when the basic minerals such as orthoclase, plagioclase, and quartz form crystals, they have a granular structure and are called granite.
Marble is the metamorphic rock formed by the original rock in the crust through the high temperature and high pressure in the earth's crust. The internal force of the earth's crust promotes a qualitative change of the original rock. The qualitative change is the change in the structure, structure, and mineral composition of the original rock. The new type of rock formed through qualitative change is called metamorphic rock. Marble is mainly composed of calcite, limestone, serpentine and dolomite. Its main component is calcium carbonate, accounting for more than 50%. Others include magnesium carbonate, calcium oxide, manganese oxide, and silicon dioxide. Because marble generally contains impurities, and calcium carbonate in the atmosphere by the role of carbon dioxide, carbides, water, but also easy to weathering and corrosion, and the surface quickly lose its luster, the general nature of marble is relatively soft, which is relative to the granite In terms of stone.
Of course, the above-mentioned marble and granite are all more narrowly defined in the above classification. What is said in the market today is that metamorphic rocks are generally textured, so they are also known as marble. The obvious spotted crystalline particles are also known as granite. Of course, if your stone is used outdoors, due to the harsh environment, more detailed classifications are needed.
Because of the pores on the surface of natural stone, it is weak in stain resistance. It is usually treated on the surface of a processing plant. In interior decoration, marble is suitable for use on TV stands, ledges, and indoor floors. The doors, kitchen counters, and outdoor floors are suitable for granite. The kitchen counter top is best to use dark granite.
Nowadays, natural stones sold on the market are partially treated with artificial colors. These stones will generally reveal their true faces within half to a year. The most obvious is the large flower greens on the market today, many of which are dyed, not real green flowers.
Another thing to note is the back grid. There are two cases where this happens: 1. The stone itself is relatively brittle and must be gridded, such as Spanish beige. 2. Cutting corners, the thickness of these stones is thinned, the intensity is not enough, so add a grid, generally darker stone if there is a grid, most of this factor.
Artificial stone
Artificial stone is based on unsaturated polyester resin as a binder, together with natural marble or inorganic powders such as calcite, siliceous sand, and glass powder, as well as appropriate amount of flame retardant, color, etc., mixed and cast by ingredients. A man-made stone made by molding and curing by vibration compression, extrusion, etc. Artificial stone is artificially researched based on practical problems. It has made great progress in terms of moisture proofing, acid proofing, alkali proofing, high temperature resistance and patchwork. Of course, man-made things naturally suffer from man-made disadvantages. The natural nature of man-made stones is obviously insufficient. Therefore, it is used in many places such as cabinets where practical requirements are high, and there are less emphasis on decorative features such as windowsills and floors.
Another factor that hinders the use of artificial stones is human factors. Since the manufacturing process of artificial stone is very different, the performance characteristics are not exactly the same. So the performance mentioned above must be the performance of the artificial stone you purchased. The artificial stone imported on the market at present is relatively good in terms of performance. Relatively speaking, the manufactured stone is of poor quality. To put it simply, the imported marble allows sanding the scratches on the surface, which is no longer obvious to the user. Many artificial stones made in China obviously cannot support this practice.
Artificial stone is suitable for use in some harsh environments such as kitchens, toilets, etc. Because textures are relatively fake, they are rarely used for decorative items in decorating.
To buy artificial stone, it is best to take a sample board for bad performance tests, such as pouring soy sauce or oil, and wear tests.
In summary, the choice of which kind to buy depends on the different uses and personal economic capabilities.
Natural stone is mainly divided into two kinds in daily use: marble and granite. In general, all textures are called marbles, and spots are mainly called granites. This is in a broad sense. In a narrow sense, marble refers to the stone produced in Dali, Yunnan. In fact, there are not a few stones from all over the country.