【摘要】 过去认为在自然界中的Cd只能有限替代ZnS中的Zn。但是,近几年笔者在研究贵州牛角塘镉锌矿床时,经电子探针、扫描电镜和透射电镜等多种方法的研究,发现锌硫化物中的Cd主要以类质同象存在,其含量可从0.8%增至37.93%;镉硫化物中的Zn同样主要以类质同象存在,其含量为2.43%~38.64%。锌硫化物与镉硫化物成渐变的过渡关系,并且Zn与Cd成很好的负相关关系,相关系数达0.99以上,形成ZnS-CdS的完全类质同象系列。这一发现无论在矿物学,还是在地球化学和矿床学上都具有重要的理论意义和实用价值。更多还原

【Abstract】 It was considered before that Cd can only limitedly substitute Zn in sphalerite in nature.However,in the recent study of the relationships between Cd and Zn in the Nujiaotang cadmium-zinc deposit,Guizhou,using the electron microprobe,scanning electron microscope and transmission electron microscope,the authors have found that Cd in zinc sulfide mainly exists as an isomorphous element with its content ranging from0.8%to37.93%,and that likewise Zn in cadmium sulfide also mainly exists as an isomorphous element with its content ranging from2.43%to38.64%.Zinc sulfide and cadmium sulfide show gradational relationship,and there is a good negative correlation between Zn and Cd with a correlation coefficient of>0.99,forming a ZnS-CdS complete isomorphous series.This discovery has great theoretical significance and practical value not only in mineralogy but also in geochemistry and geology of mineral deposits.更多还原