What is the structure of sandstone ah?
Quartz, feldspar and other clastic components accounted for more than 50% of sedimentary clastic rock. Sandstone is formed by weathering, denudation and transport of rocks in source rocks. The rock consists of two parts: clastic and interstitial. In addition to quartz, feldspar, dolomite, heavy minerals, cuttings, etc.. The interstitial material comprises two components of the cement and the clastic complex. Common cements are siliceous and carbonate cements; the miscellaneous component is mainly a finer clay or silty sand that is deposited at the same time. The composition and structure of interstitial materials reflect the geological environment and physical and chemical conditions of sandstone formation. Sandstone can be divided into three categories: quartz sandstone, feldspar sandstone and lithic sandstone. Sand and sandstone are the main reservoirs of petroleum, natural gas and groundwater. Sand and sandstone can be used as abrasives, glass raw materials and building materials. Some of the occurrence of sand and sandstone is rich in gold, diamond, zircon, ILMENITE PLACER, Jin Hongshi etc..
Mud sandstone also has a similar plastic plastic deformation, more suitable for carving and cutting out of the 10mm thick sheet, about the slight plastic deformation of sandstone, now generally considered that the molecular connection between SiO2, but did not form the cause of caking. The water absorption rate of sandstone, some varieties are almost pour water on the infiltration of stone, sandstone due to the internal structure of large porosity characteristics, have characteristics of sound absorption, moisture absorption, fire prevention, Yaguang, the characteristics of the variety of decoration with acoustic requirements of the theaters, stadiums, hotels and other public places effect very good, and can save the sound absorption board and stucco wall. How is the beautiful pattern of sandstone formed? The prevailing view is that the impact of the water and the traces left behind after the impact of the sandstone and other mineral forms are the main reasons for the formation of the pattern. China's "building materials radionuclides Limited" (GB6165 - 2001) clearly stipulates that the sandstone is not included in the scope of inspection of radioactive radiation, which is based on the annual monitoring and conclusion, a large number of checks for the preparation standard. In fact, as a kind of SiO2, Al2O3 based stone, it is itself a kind of environmental protection, green, with the rest of the building materials.
Sandstone, as its name implies, is a kind of stone that can be used as building material. The main ingredient is SiO2, Al2O3, in the world of nature through the geological changes in the sea to the land to the deposition and deposition, the accumulation of a large number of sand terrain masking, and through geological processes in the heated, pressurized and the formation of. The sea is divided into sandstone sandstone and mud two sandstone, stone composition and structure of sea sandstone coarse particles, hardness than the mud sandstone porosity is relatively large, hard, brittle, as stone project sheet could not very thin, with decorative decoration plate thickness specifications is generally 15 ~ 25mm; main representative varieties Australia sandstone, sandstone and siltstone in Spain; more delicate, slightly soft sand rock in hardness, pattern changing strange, like painting, landscape pattern, tree rings in wood in nature, is the wall and floor decoration and profile of good varieties.
