Silicon is a very rich element in the earth, which accounts for 25.8% of the earth’s surface and second only to the oxygen element.Silicon resources refers to crystal, quartz vein quartz, quartz gravel, natural silica sand, etc..The main chemical composition is SIO2, which is rich in natural resources.According to data records, Brazil quartz resources are more abundant, the second is Madagascar and guatemala.More than 30 countries and regions including the United States,Canada,the Soviet Union, France,Italy,India,Australia,Turkey,Burma are distributed.Due to the deep processing of crystal and quartz was used in the military equipment since the Second World War.In 1948,three scholars from the United States Baer telephone Institute invented the semiconductor.Made of semiconductor radio, followed by the advent of semiconductor radio and so on, crystal and quartz become a strategic material, so it is difficult to calculate the output of all countries in the world.
Our quartz crystal, natural silica sand, except for Shanghai and Tianjin,other provinces, municipalities and autonomous regions have output.Quality of crystal and quartz vein is best in Jiangsu, in which Donghai County natural quartz and quartz veins is the most abundant.According to the 6th team of Jiangsu geological forecast:natural crystal reserves are about 146 thousand tons, SIO2 content of up to 99.9983,%,its quality and reserves is NO.1 in China.
