Selenium Enrichment in Cambrian Stratabound Gold Deposits in the Western Qinling Mountains  

作　　者：Liu Jiajun,Open Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou 550002Zheng Minghua, Chengdu Institute of Technology, Chengdu, Sichuan 610059Liu Jianming, Research Centre of Mineral Resources Exploration, Chinese Academy of Sciences,Beijing 100101Zhou Yufeng, Gu Xuexiang, Zhang Bin, Lin Li, Chengdu Institute of Technology, Chengdu, Sichuan 610059and Lu Wenquan Institute of Comprehensive Utilization of Mineral Resources, Chengdu, Sichuan 610041 

出　　处：《Acta Geologica Sinica(English Edition)》1997年第4期423-432,共10页地质学报（英文版）

基　　金：This study was supported by the National Natural Science Foundation of China (Grant Nos. 49503048 and 49773197), a Sino-Austrian cooperation project (No. 4880099) and the Postdoctoral Science Foundation of China

摘　　要：Stratabound gold deposits in the western Qinling Mountains occur in Cambrian chert formation composed of carbonaceous chert and carbonaceous slate. The distinctive chert formation provides important grounds for the mineralization and controls on the formation of gold deposits. Study shows that Se is exceptionally higher in both host rocks and gold orebodies. It may be recovered as a valuable component in ores for total utilization, and in some localities even independent Se orebodies (which are mined exclusively for Se) may be delineated. In gold ore Se mainly occurs as independent minerals or in the isomorphous form in sulphides and there is a positive correlation between Se and Au.Stratabound gold deposits in the western Qinling Mountains occur in Cambrian chert formation composed of carbonaceous chert and carbonaceous slate. The distinctive chert formation provides important grounds for the mineralization and controls on the formation of gold deposits. Study shows that Se is exceptionally higher in both host rocks and gold orebodies. It may be recovered as a valuable component in ores for total utilization, and in some localities even independent Se orebodies (which are mined exclusively for Se) may be delineated. In gold ore Se mainly occurs as independent minerals or in the isomorphous form in sulphides and there is a positive correlation between Se and Au.

关 键 词：stratabound gold deposit SELENIUM mineralization ENRICHMENT western Qinling Mountains 

分 类 号：P618.51[天文地球—矿床学]