The Distribution Pattern of the Ore-Forming Elements of Chaganhua Mo Mine in Inner Mongolia
详细信息
- 责任者：Cui Jiangli (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Huang Xiangchun
- 刊名：Earth Science Frontiers
- 出版年：2013
- 卷期：20(4)
- 关键词：钼矿 ; molybdenum ores ; 内蒙古 ; Inner Mongolia
- 页码：p.299-304
- 图表：illus., 1 table, 11 refs.
- 分类号：1001
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
The exploration of Chahuagan Mo mine is an important breakthrough in Sino-Mongolian border region in recent years,and the metallogenic elements mainly included Mo,Bi and W.According to engineering data,a three-dimensional model of the deposit was constructed and the variogram was analyzed by the method of kriging.The results showed that the nuggets of Mo,Bi and W were 0.003884,0.020534 and 0.0096 with variable range of 125-217 m,224-125 m and 124-178 m,respectively.The contour map of the ore-forming elements in three-dimensional model showed that Mo mineralization was relatively continuous and uniform and better than Bi whereas the distribution of W mineralization was messy.Based on the analysis of drilling data,the correlation coefficient between Mo and Bi is 0.3 whereas W is negatively correlated with Bi and Mo.Geological studies indicated that molybdenum veins were infection-like mineralization which was controlled by porphyry body,and W mineralization was controlled by quartz veins.Comprehensively,it could be presumed that twice mineralization may exist within the mining area.The early high-temperature W-Bi hydrothermal vein-type mineralization was interfered by the later porphyry mineralization.Thus,oxyphilic W was diluted and dispersed,and then chalcophile Bi was partially activated and precipitated with Mo simultaneously.
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