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

Arid

DOI	10.1007/s11631-013-0636-0
	Deep-penetrating geochemistry of the Tuwu copper deposit, northwestern China
	Wen Xueqin; Zhao Shanding; Zhang Hong
通讯作者	Wen, XQ
来源期刊	ACTA GEOCHIMICA
ISSN	2096-0956
EISSN	2365-7499
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 CuCO3, 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	ESCI
WOS记录号	WOS:000218354500009
WOS关键词	CONTINENTAL GROWTH ; MOBILE FORMS ; EXPLORATION ; OVERBURDEN ; EVOLUTION ; XINJIANG ; METALS
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/330400
作者单位	[Wen Xueqin; Zhang Hong] Taiyuan Univ Technol, Sch Min Technol, Dept Geosci, Taiyuan 030024, Peoples R China; [Zhao Shanding] Changan Univ, Xian 710054, Peoples R China; [Zhao Shanding] CAGS, Key Lab Appl Geochem, Langfang 065000, Peoples R 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.ACTA GEOCHIMICA,32(3),303-312.
MLA	Wen Xueqin,et al."Deep-penetrating geochemistry of the Tuwu copper deposit, northwestern China".ACTA GEOCHIMICA 32.3(2013):303-312.