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Review Article

Re–Os Isotopic Age of the Hongqiling Cu-Ni Sulfide Deposit in Jilin Province,NE China and its Geological Significance

Han Chun-Ming1*, Xiao Wen-Jiao1, Zhao Guo-Chun2, Su Ben-Xun1, Ao Song-Jian1, Zhang Ji-En1, Wan Bo1 and Zhang Zhi-Yong1
1Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
2Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
Corresponding Author : Han Chun-ming
Institute of Geology and Geophysics
Chinese Academy of Sciences, Beijing 100029, China
Tel: 8610 62007917
Fax: 8610 62010846
E-mail: [email protected]
Received February 23, 2014; Accepted March 06, 2014; Published March 14, 2014
Citation: Han CM, Xiao WJ, Zhao GC, Su BX, Ao SJ, et al. (2014) Re–Os Isotopic Age of the Hongqiling Cu-Ni Sulfide Deposit in Jilin Province, NE China and its Geological Significance. J Geophys Remote Sen 3:118. doi:10.4172/2169-0049.1000118
Copyright: © 2014 Han CM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The major Hongqiling Cu-Ni sulfide deposit in central Jilin Province is located in the eastern part of the Central Asian Orogenic Belt. Rhenium and osmium isotopes in sulfide minerals from the deposit have been used to determine the timing of mineralization and the source of osmium and, by inference, the ore metals. Sulfide ore samples have osmium and rhenium concentrations of 0.28-1.07ppb and 2.39-13.17ppb, respectively. Ten sulfide analyses yield an isochron age of 223 ± 9 Ma, indicating that the Cu-Ni sulfide mineralization formed in the Early Triassic. The initial 187Os/188Os ratio is 0.295 ± 0.019 (MSWD = 1.14). This data indicates that the mineralization was derived mainly from a mantle source with some quantities of crustal components introduced into the rockforming and ore-forming systems during mineralization and magmatic emplacement. Together with the widespread occurrence of late Carboniferous-Permian mafic–ultramafic complexes and associated Permian Cu-Ni deposits in the western part of the Central Asian Orogenic Belt (Northern Xinjiang), we conclude that mantle-crustal interactions were active during the accretion-collisional processes that led to the Cu-Ni mineralization and considerable continental growth in the late Carboniferous-Permian to mid-Triassic.

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