Sandstone is a sedimentary rock, mainly composed of sand consolidation, particles 0.05 2 mm in diameter, the sand content more than 50%, stable structure, usually a light brown or red, mainly containing silicon, calcium, clay and iron oxide. Most sandstone is composed of quartz or feldspar
Sandstone is formed in the basin by weathering, denudation and transportation of rock. Rocks are composed of debris and interstitial material. Minerals: quartz, feldspar, white mica, calcite, clay mineral, dolomite, oolite, chlorite, etc. The filler consists of two components: cementitious and clastic. Common colloidal materials have silica and carbonate cementation; The heterogeneity mainly refers to the finer clay or silty particles deposited with the detrital particles
Sandstone is a kind of sedimentary rock, which is deposited on the riverbed by the water erosion by the stone grains, which is strengthened by the accumulation of thousands of years. Later, the earth's crust moves to form today's mines. Although China's breed of sandstone is very much, but the Lord is concentrated in sichuan, yunnan and shandong, this is sandstone of the three major production areas in China, at the same time, hebei, henan, shanxi, shaanxi, also have, but the product awareness is not high, small influence.
Characteristics: sandstone, sound insulation, moisture absorption, anti-damage, outdoor weathering, water insolation, not long moss, easy to clean, etc. Advantages of sandstone:
The advantages: sandstone is a kind of non-light pollution, non-radioactive high quality natural stone, no radiation injury to the human body. It is moisture-proof, anti-skid, absorbance, absorbance, tasteless, radiation-free, fadeless, warm and cool in winter, warm and elegant; Compared with wood, it is not deformed, deformed, not decomposed and colorfast. Product installation simple, as long as with marble glue can make the carvings on the wall, the products with wooden decoration organic connection, background modeling space to play a more perfect, to overcome the traditional stone material cumbersome and reduce installation costs. Decorated houses do not need to add other processes and paint to install the sculpture directly onto the wall.
The material aspect of the material, a kind of warm and tonal decorative materials, simple and elegant and warm, harmonious and not lose the luxury; It has the texture of stone, the texture of the wood, and the spectacular landscape painting, rich in color, close to nature, ancient and elegant, and unique in many stone materials, which is called "lishi".
According to the diameter of the sand is divided into: giant grain sandstone (2 ~ 1 mm), coarse grained sandstone (1 ~ 0.5 mm), medium grained sandstone (0.5 ~ 0.25 mm), fine grained sandstone particles (0.25 ~ 0.125 mm) and sandstone (0.125 ~ 0.0625 mm), the above all kinds of sandstone, the corresponding fraction content should be above 50%.
Classification by rock type
By (mineral) rock type classification: quartz sandstone, quartz and a variety of siliceous rock debris content over 95% of the total level of sand rock debris) and quartz sandstone, feldspar sandstone (clastic composition are mainly quartz and feldspar, quartz content lower than 75%, feldspar by more than 18.75%) and feldspar sandstone, lithic sandstone (detrital quartz content lower than 75%, lithic content is generally greater than 18.755, the cutting/feldspar ratio greater than 3) and lithic sandstone.