Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Jilin University(Earth Science Edition)》 2010-04
Add to Favorite Get Latest Update

Bismuth Minerals and Its Relationship with Copper Mineralization in the Jiama Copper Polymetallic Deposit,Tibet

YING Li-juan1,2, WANG Deng-hong1, TANG Ju-xing1, WANG Huan2, CHEN Zhen-yu1, ZHENG Wen-bao3, LI Feng-ji31.Institute of Mineral Resources,Chinese Academy of Geological Sciences, Beijing 100037, China 2.Graduate School, Chinese Academy of Geological Sciences, Beijing 100037, China 3.Department of Earth Sciences,Chengdu University of Technology,Chengdu 610059, China  
The bismuth minerals in the skarn-type copper ore of the Jiama copper polymetallic deposit in Mozhugongka County, Tibet, has reached 0.23%, and can be used as an associated useful metal element. Based on the geochemical analyses, bismuth is closely correlated to the skarn and copper mineralization. The bismuth content is relatively higher in the skarn copper ore than those in other ores. In the vertical section, bismuth has concentrated in the same zone as copper of the vertical mineralization zoning. Analyzed by electron probe, bismuth mainly occurs in the bismuth minerals and bismuth-bearing sulfides, including wittichenite, tetradymite, aikinite, and bismuth-bearing tetrahedrite and bornite. The wittichenite is the major bismuth mineral in the Jiama deposit. It occurs as two occurrences, foliated/xenomorphic granular and dropwise in bornite, chalcocite and tetrahedrite. According to the occurrences and electron probe data, the wittichenite may form in two epochs at short time interval with normal chemical component and lower Bi, higher Cu and S, respectively. Therefore, bismuth in Jiama deposit should be comprehensively utilized, and it is also a significant clue for prospecting of copper mineralization.
【Fund】: 中央级公益性科研院所基本科研业务费专项资金项目(K0911);; 中金集团重点勘探项目(E0804);; 国土资源部地质大调查项目(1212010733803);; 国家科技支撑项目(2006BAB01A01);; 青藏专项(1212010818089)
【CateGory Index】: P618.69
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved