Sandstone is the most widely used stone, its noble and elegant temperament natural environmental characteristics of the achievements of the architectural history of the flower. Hundreds of years ago, with sandstone decorated with the Louvre, the British imperial Palace, Harvard University,Sandstone Notre Dam De Paris and so far still still, refined code forever.
The natural decorative effect and artistic Sandstone intension of sandstone in building and decorating space are incomparable with other decorative materials. Surface texture and strong plasticity and expressiveness, can make it to display a variety of different artistic styles.
Sandstone is Sandstone formed by quartz particles (sand) and is structurally stable, usually pale brown or red, mainly containing silicon, calcium, clay and iron oxides. Sandstone Sandstone is a sedimentary rock, mainly cemented by sand grains, in which the grain content of sand is more than half. Most sandstone is made of quartz or feldspar. Here's a concrete description of the type of sandstone!
Quartz Sandstone: The content of quartz and siliceous cuttings accounted for more than 95% of the total sand grade detritus, containing only a small amount or not containing feldspar, cuttings and heavy minerals. Clastic particles are mainly quartz crystal, grinding roundness and sorting is better, Sandstone the composition maturity and structural maturity are the highest. Small base, granular support. The quartz miscellaneous sandstone is called when the miscellaneous base is 15%. Quartz sandstone is mainly formed in the stable geotectonic environment, the topography is quasi-plain, the mother rock is weathered long, the products of denudation are mostly in the environment of ocean (such as beach), which is formed by the strong wave and water flow and the slow deposition of repeated abrasion. It is often symbiotic with carbonate deposits, composed of quartz sandstone-sea-made carbonate, Sandstone such as the upper part of the North China-Taipei-Cambrian.
Feldspar sandstone: feldspar clastic content accounted for more than 25% of the total sand grade debris. Quartz content of which is 75%, can contain more mica and heavy minerals. The cements are mainly calcareous and iron, often containing clay complexes. When the 15 is mixed, it belongs to Sandstone the feldspar complex sandstone. The clastic granules are generally divided and the roundness is medium. Feldspar sandstone is often pale yellow, meat powder or green ash and other colors. Feldspar sandstone can be divided into 3 types according to its forming conditions, namely tectonic feldspar sandstone, basement feldspar sandstone and climatic feldspar Sandstone sandstone. Feldspar sandstone is generally a strong tectonic movement in the region, the mother rock is granite or granitic gneiss, the climate is dry and cold, mainly physical weathering, under strong erosion and rapid accumulation of conditions. Mostly continental deposits, the sea becomes less. Often deposited in the Piedmont or in the Mountain basin. It has been found that many feldspar sandstones were formed in Continental Rift Valley. There are feldspar sandstone in the Sinian system of Tangshan, Hebei province, in which feldspar can exceed 50%.