With the improvement of living standards, people are constantly updating the aesthetic concepts of their own living environment, and marble and granite are also increasingly appearing in home decoration. Building decoration, decorative finishes are mainly marble and granite stone. Marble is mainly used for indoor, granite is mainly used for outdoor, are high-grade finishes.
With marble and granite for indoor and outdoor decoration decorative effect is good, durable, but high cost, which is used for public buildings and decorative grade demanding projects. With Xiaobian below to see granite and marble which is more expensive and the difference between marble and granite.
First, the marble and granite area
China granite-1, divided by stone cause
(1) 1. granite
Granite belongs to igneous rock
Igneous rocks are mainly formed from volcanic material, such as magma. Liquid magma under the surface is cooled and solidified. Mineral gases and liquids penetrate rocks to form new crystals and colors.
Generally dark color. Natural granite is igneous, also known as acid crystalline deep pluton, igneous rock is the most widely distributed in a rock, is hard stone, rock hard and dense, according to the size of its crystalline particles can be divided into "Pei Jing", "coarse grain" And "fine crystal" three.
(2) 2, marble
Marble is a metamorphic rock
Metamorphic rocks are another kind of stone that is naturally metamorphosed by a rock under the action of heat, pressure and minerals. The qualitative changes may be recrystallization, texture changes or color changes.
Natural marble is the metamorphic rock formed by the original high-temperature and high-pressure rock in the crust. Belong to the hard stone, mainly composed of calcite, limestone, serpentine and dolomite. There are usually obvious patterns, a lot of mineral particles.
China granite-2, according to the hardness difference
The hardness of the stone to Mohs hardness as a unit of Mohs hardness of 6-7 are hard stone, such as granite, Mohs hardness of 3-5 are medium-hard stone, such as marble, Mohs hardness of 1-2 for the soft stone Such as limestone and dolomite.
(1) Marble
As the marble generally contains impurities, and calcium carbonate in the atmosphere by carbon dioxide, carbides, moisture also easy to weathering and erosion, leaving the surface quickly lose its luster. Therefore, a few, such as white marble, Ai Ye Qing and other pure, less impurities and more stable and durable varieties can be used outdoors, other varieties should not be used outdoors, generally only for interior decoration. Mohs hardness of 3-5.
(2) Granite
Granite than the high hardness of marble, which is difficult to process, but acid and weathering corrosion. Not easy to weathering, the appearance of color can be maintained for more than a century, it is mostly used for wall foundation and exterior finishes. Because granite hardness, wear-resistant, it is also commonly used in advanced construction and renovation works, for example, the lobby floor. Mohs hardness of 6-7.
China granite-3, the chemical composition of distinction
(1) Marble
Belongs to carbonate stone, the main component of calcium carbonate, accounting for more than 50%, there are other magnesium carbonate, calcium oxide, manganese oxide and silicon dioxide. There are usually obvious patterns, a lot of mineral particles. (Basic)
(2) Granite
It is mainly composed of quartz, feldspar, amphibole, pyroxene, olivine and biotite. It belongs to silicate stone, and its composition mainly consists of silica, accounting for about 65% -75%. (Acidic)
China granite-Second, granite and marble prices
Rich in marble marble in Dali, Yunnan, its high pressure resistance, water absorption, easy to clean, detailed texture, is a more advanced indoor flooring materials. The average family in the decoration can choose 100-200 yuan per square meter of marble. The disadvantage of marble is that it quickly reacts with the moisture and carbon dioxide in the air in the environment, rendering the surface dull and roughened
Granite has a wear-resistant, frost resistance, anti-weathering, corrosion resistance, beautiful color and so on. Granite home floor decoration, can make the room noble, elegant, show luxurious style. But its price is more expensive, the average household can choose about 200-300 yuan per square meter of varieties.
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