Sandstone is a kind of sedimentary rock, mainly composed of various sand grains cemented, particle diameter in 0.05-2mm, of which the sand content is greater than 50%, the structure is stable, usually light brown or red, mainly containing silicon, calcium, clay and iron oxide. The vast majority of sandstone is made up of quartz or feldspar
Morphological characteristics
Sandstone is formed by the accumulation of rocks in the source area through weathering, erosion and transport in the basin. Rock consists of two parts: clastic and filler. Common minerals of detritus: quartz, feldspar, muscovite, calcite, clay minerals, dolomite, chlorite, chlorite, etc.
distribution
Sandstone is a kind of sedimentary rock, which is made of stone particles that have been washed by water and deposited on the riverbed, and have become strong after thousands of years of accumulation. Later, due to the movement of the earth's crust, it formed today's mines. Although there are many varieties of sandstone in China, the main one is concentrated in Sichuan, Yunnan and Shandong, which are the three major production areas of sandstone in China, while Hebei, Henan, Shanxi, Shaanxi, etc. also have it, but the product is not well known and has less influence.
Sandstone is the most widely used stone by human beings, and its noble and elegant temperament and natural environmental protection characteristics have made it a wonderful flower in the history of architecture. The Louvre, which was decorated with sandstone hundreds of years ago, the British Royal Palace, the US Capitol, Harvard University, Notre Dame Cathedral, etc. still have the charm and the essence is still there.