目前在南海沉积物中发现的地球外源物质——宇宙尘,按能谱分析资料,可归纳为两类。第一类以硅为主,其它有铝、磷、硫、氯、钾、钙、钛、铁、镍、锌等元素;第二类以铁为主,其它有铝、硅、磷、氯、钾、钙、钛、锰等元素。而以第一类即硅酸盐玻璃质占绝对优势,第二类铁质的极少。 硅酸盐玻璃质宇宙尘,具玻璃光泽,透明、半透明或微透明,贝壳状断口,性脆, Currently in the South China Sea sediments found in the Earth’s exogenous substances - cosmic dust, according to energy spectrum analysis of information can be grouped into two categories. The first is mainly silicon, the other is aluminum, phosphorus, sulfur, chlorine, potassium, calcium, titanium, iron, nickel, zinc and other elements; the second is mainly iron, the other with aluminum, silicon, phosphorus, Potassium, calcium, titanium, manganese and other elements. The first category is the silicate glass absolute advantage, the second category of very little iron. Silicate glassy cosmic dust, with a shiny glass, transparent, translucent or slightly transparent, shell-shaped fracture, brittle,