There are several decorative stone? What kind of natural stone and characteristics of it?
Limestone is a source of sediment formed by the source, the main component is calcium carbonate, calcium magnesium carbonate or a mixture of calcium carbonate and magnesium carbonate. Recrystallized limestone, strong microcrystalline limestone and polished limestone are advertised and marketed as limestone or marble, especially in the United States.
Marble is formed by metamorphic rocks of sedimentary rocks and sedimentary rocks, a metamorphic rock formed by the recrystallization of limestone, usually accompanied by a texture of a biological remains. From a commercial point of view, all naturally occurring, polished calcareous rocks are called marble, and some dolomite and serpentine are also true.
Home decoration in the common natural stone are:
Marble, granite, limestone, slate, sandstone, quartzite, Roman stone, purple rock, which is the most used marble and granite these two categories, these natural stone with their natural unique pattern, natural cold Ridge and warm texture attract people, and become home decoration in one of the more upscale ground decoration.
Natural stone in accordance with its factors derived from a variety of types, the United States Material Testing Association will be divided into natural stone sandstone, slate, marble, granite, limestone and other six kinds of ingredients.
Granite is igneous, from the underground magma jet and intrusion cooling crystallization, and granitic metamorphic rocks formed. With visible crystal structure and texture. The granite has a specific gravity between 2.63 and 2.75 and has a compressive strength of 1,050 to 14,000 kg / cm? (15,000 to 20,000 psi). Because the strength of granite than sandstone, limestone and marble, so more difficult to mine.
1, sandstone:
Sandstone is mainly composed of minerals and rock particles (particle size of 0.06-2mm) and contains more than 60% of the silica of a class of sedimentary rocks. It has a multi-void structure of silica, iron oxide, carbonate or clay. Classification: commercial mainly divided into blue ash sandstone, brown sandstone, is quartz sandstone, quartzite, gravel, siltstone.
2, slate:
Slate is a plate-like structure, basically no recrystallization of the rock, is a metamorphic rock, the original rock is muddy, silty or neutral tuff, along the plate direction can be stripped into thin slices. The color of the slate varies depending on the impurities it contains. The iron is red or yellow; the carbonaceous is black or gray; the case of calcium is bubbled, so it is generally classified as its color. Green slate, black slate, calcareous slate and so on.
