摘要
对尉犁蛭石矿床的11个蛭石样品和6个金云母样品进行标准X—射线荧光分析得到其化学组成.一般地,蛭石化学组成为:SiO_2>42.49(％),MgO>27.15,Al_2O_3<14.K_2O+Na_2O<8.25;金云母化学组成为:SiO_2<42.01,MgO<26.75,Al_2O_3>14.K_2O+Na_2O>10.07.根据其成分分析结果计算蛭石和金云母的结构式,同时对其主要化学组成之间的关系进行讨论.在由金云母向蛭石的转变过程中,很明显地存在着元素的再分配,Al_2O_3和K_2O含量降低,SiO_2和MgO富集.
The chemical compositions of 11 vermiculite and 6 phlogopite samples from weili vermiculite Ore were analyzed by standard X - ray fluorescence techniques. Generally, vermiculite :Sio2>42. 49(%),Mgo>27. 15,Al2O3<14,K2O + Na2O<8. 25;phlo-gopite:SiO2<42. 01,MgO<26. 75, Al2O3>14,K2O + Na2O>10. 07. According to the analytical results the structure formulas of vermiculite and phlogopite samples were calculated and the relationship between the major chemical compositions are discussed. It is very obvious that the process of transforming phlogopite into vermiculite has redistributed the elements the Al2O3and K2O contents were of transforming phlogopite into vermiculite has redistributed ,while the SiO2 and MgO contents were enriched.
关键词
蛭石
化学组成
再分配
weili, vermtculite,chemical composition,redistribute
