【摘要】 <正> 萤石的主要成份是 CaF₂,占90%左右,其中含氟（F）48.8%,所以,又称为“氟石”。纯净的萤石无色透明,而混有杂质的萤石常呈紫色、绿色、黄色、淡蓝色及淡玫瑰色,萤石具有玻璃光泽,硬度4,性脆,比重3.0-3.2,溶于硫酸,基本上不溶于水,熔点为1,270—1,350℃萤石属等轴晶系,晶体常呈立方体,其次为八面体。在冶金工业中,萤石主要用作平炉炼钢的熔剂;在化学工业中,它是制取氢氟酸及其它氟化物的重要原料,氟化氢可用来生产毛玻璃和塑料等;无色更多还原

【Abstract】 The formation and distribution of the fluorites and the relation of the distribu-tion between the fluorosis and the fluorites in Henan Province were dealed within this paper,The total fluorine contents in the fluorites were determined as 68.675ppm.The fluorine contents in the drinking water in the mineral areas range from1.60 to 3.50 ppm.Both the dissolved and total fluorine contents of the soil in themineral areas are higher than in the mineralless areas,but the fluorine contents ofthe food in the mineral areas are similar to those in the mineralless areas.Thissuggests that the transmission way of the fluorine in the mineral areas is from fluoritero rock to soil to drinking water to human instead of from fluorite orrock tosoil to food ot human.So that drinking water is the key pathogenic link of thefluorosis in the fluorite areas.更多还原