What natural stone is available for stone sculpture?

Natural stone is a general term for materials that are mined from natural rock and processed into blocks or slabs. Architectural decoration with natural stone mainly granite and marble two major natural stone has a unique texture, in daily use need to wax and other care, but after a long time natural stone because it has natural pores and other characteristics will be due to the depth of the outside world of other substances and produce anti-alkali or color spots and other diseases. The so-called marble refers to the sedimentary or metamorphic carbonate rocks, there are marble, dolomite, chert, sandstone, shale and slate. Such as China's famous white jade is Beijing Fangshan produced dolomite, Yunnan marble is produced in Dali County marble, the famous Dandong green is serpentinized silica rock.

Similarly, the various types of magmatic rocks mined as stone, such as granite, andesite, diorite, green feldspar, gneiss and so on are called granite. Such as Beijing Baihu Jian white granite is granite, Jinan green is gabbro, and Qingdao's black granite is pyroxene.A products can be used in office buildings and family rooms, B products radioactive degree is higher than A, can not be used in the interior of the room, but can be used for internal and external finishes of the building; C products are more radioactive, can be used for the external finishes of the building only. Natural stone, radioactivity is class A, including cherry red, General red, Taiwan red, Xinjiang red, Shidao red, Anxi red, maple red, Xili red, Tianshan white hemp, Tianshan red and Xiamen red, etc.; belonging to the class B, including India red and Guilin red, etc.; belonging to the class C commodities for the Yongding red, and some places in the azalea red, the level of radioactivity greater than the C class standard. There have been rumors that the color of the stone can be used to distinguish the level of radioactivity. In fact, according to the relevant state departments of the test, the color can not be used as a basis for judging its radioactivity. Such as red stone radioactivity is high and low, azalea red, South African red, Indian red, etc. Higher, there are B, C, and a large number of red stone, such as Anxi red, maple leaf red is A class products. In short, the radioactivity of the stone needs to be based on the data detected by the relevant units.