干旱区生态环境知识资源中心(Arid): Deep-penetrating geochemistry of the Tuwu copper deposit, northwestern China

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	Deep-penetrating geochemistry of the Tuwu copper deposit, northwestern China
	Wen Xueqin; Zhao Shanding; Zhang Hong
来源期刊	Chinese Journal of Geochemistry
ISSN	1000-9426
出版年	2013
卷号	32 期号:3 页码:303-312
英文摘要	Desert terrains in northern China are covered by widespread regolith sediments which mask geochemical signals from ore bodies and are major obstacles to mineral exploration. There is a critical need to study the vertical distribution of elements in this regolith and to establish optimum sampling and analytical methods. The aim of this study is to understand the dispersion and variation of elements throughout the cover in a vertical profile. The results demonstrate that the main elements show a distribution pattern of enrichment in clay layers in the vertical profile, i.e., most elements tend to be enriched in the most upper part of the profile above the orebodies except for some elements like Cu, Ca and Ag. Meanwhile, both fine (-160 mesh) and coarse (+20 mesh) fraction samples from clay-rich horizons are favorable samples and selective leaching of the elements absorbed on clays or oxide coatings is effective for localizing buried deposits. The distribution of active Cu and Mo is quite different because chalcopyrite is weathered into Cu sulfate and CuCO_3, and is precipitated in alkaline environments in a layer below close to the surface. Mo is soluble in the alkaline environment so it can penetrate the caliche layer and be enriched on the surface of soil enriched with weakly cemented clay.
英文关键词	desert regolith vertical variation buried ore-body mobile element: Tuwu copper deposit
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Mineralogy
CSCD记录号	CSCD:4909302
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335256
作者单位	Wen Xueqin, Department of Geoscience, School of Mining Technology, Taiyuan University of Technology, Key Laboratory of Applied Geochemistry, CAGS, Taiyuan, Shanxi 030024, China.; Zhao Shanding, Changan University, Key Laboratory of Applied Geochemistry, CAGS, Xian, 710054.; Zhang Hong, Department of Geoscience, School of Mining Technology, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China.
推荐引用方式 GB/T 7714	Wen Xueqin,Zhao Shanding,Zhang Hong. Deep-penetrating geochemistry of the Tuwu copper deposit, northwestern China[J],2013,32(3):303-312.
APA	Wen Xueqin,Zhao Shanding,&Zhang Hong.(2013).Deep-penetrating geochemistry of the Tuwu copper deposit, northwestern China.Chinese Journal of Geochemistry,32(3),303-312.
MLA	Wen Xueqin,et al."Deep-penetrating geochemistry of the Tuwu copper deposit, northwestern China".Chinese Journal of Geochemistry 32.3(2013):303-312.