美国和南非在世界蛭石工业中长期占主导地位,据报道,1988年的世界蛭石产量约50万吨,其中,美国产27万吨,以国内消耗为主;南非产20.31万吨,出口17.709万吨,占世界蛭石贸易总量的90％。巴西在世界蛭石市场上 The United States and South Africa have dominated the world’s meteor industry for a long time. According to reports, the world production of meteorites was about 500,000 tons in 1988, of which 270,000 tons were produced in the United States, mainly domestic consumption, and 203,100 tons were produced in South Africa. 17.889 million tons, accounting for 90% of the world’s total trade volume of vermiculite. Brazil in the world meteorite market