Three-Dimensional Model Analysis and Deep Prognosis of the Jiama Copper-Polymetallic Deposit in Tibet
详细信息
- 责任者：Li Ying (Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Xiao Keyan
- 刊名：Acta Geoscientica Sinica
- 出版年：2013
- 卷期：34(4)
- 关键词：多金属矿 ; polymetallic ores ; 成矿作用 ; metallogenesis ; 西藏 ; Tibet
- 页码：p.509-512
- 图表：6 illus., 6 refs.
- 分类号：1001
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
摘要
Located about 68 km away from the east of Lhasa in Tibet,the Jiama copper polymetallic deposit is a porphyry-skarn-hornfels type copper-polymetallic deposit related to the ore-forming process of porphyry in the Gangdise metallogenic belt.Guided by the metallogenic series and ore-forming geological anomaly theory,this paper analyzed ore field structures and elements zoning.The authors used three-dimensional modeling and visualization technology to build its 3D deposit model,applied the surface simulation method to extract ore-controlling structure interface of the mining area,and proved that the structural interface had completely controlled the enrichment of Cu,Mo,Ag,Au.The elements zoning studies have shown the variation that shallow Pb,Zn change to deep Cu,Mo.The discussion on the spatial position of the metallogenic center shows that it is possible to find concealed porphyry ore bodies in the depth of ZK1616-ZK3216 area.