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Alaskan-type nature and PGE mineralization of the Wuxing mafic-ultramafic complex in eastern part of the Central Asian Orogenic belt

文献类型：期刊论文

作者Cui, Meng-Meng7,8,9; Su, Ben-Xun5,6,7; Wang, Jing5,6,7; Chen, Kai-Yun4; Sakyi, Patrick Asamoah3; Tang, Dong-Mei5,6,7; He, Yun-Peng1; Sun, Jing-Gui1; Cui, Jun2; Anani, Chris Yao3
刊名ORE GEOLOGY REVIEWS
出版日期2020-08-01
卷号123页码:24
关键词Alaskan-type complex Sulfur isotopes PGE deposit Central Asian Orogenic Belt
ISSN号0169-1368
DOI10.1016/j.oregeorev.2020.103566
英文摘要The Wuxing mafic-ultramafic complex is located in the eastern part of the Central Asian Orogenic Belt (CAOB). It consists of hornblende-olivine clinopyroxenite, hornblende clinopyroxenite, clinopyroxenite, gabbro and diorite. Hornblende occurs in all the rock types of the complex and is pargasite in composition. Clinopyroxene is diopsidic in composition with high CaO and low TiO2 contents. The flat REE and sub-parallel trace element patterns of both clinopyroxene and hornblende suggest that these rocks were formed by fractional crystallization from common magma with no significant crustal contamination. Enrichment in large ion lithophile elements relative to high field strength elements of the silicate minerals, together with the variable sulfur isotope compositions (delta S-34 = -2.55 similar to 11.01 parts per thousand) of the sulfides, indicate the involvement of subducted oceanic materials into the mantle source. These petrological, mineralogical and geochemical features strongly suggest the Alaskan-type nature of the Wuxing complex. The hydrous parental magma of the Wuxing complex was derived from partial melting of the mantle wedge, which had been metasomatized by subducted melts/fluids. The Wuxing complex is a unique Pt-Pd-rich Ni-Cu sulfide deposit in the CAOB. The ore minerals, which are dominated by pyrite, pyrrhotite, pentlandite, chalcopyrite and platinum-group mineral (PGM), mainly occur in clinopyroxenite and hornblende clinopyroxenite. The sulfide ores are predominantly present as net-textured and disseminated textures. Pentlandite and chalcopyrite associated with pyrrhotite commonly occur in the marginal zone of the pyrrhotite grains. The PGMs occur as interstitial grains at the contact between base-metal sulfides and silicate minerals or along the crack of pyrrhotite or clinopyroxene, or as inclusions in pyrrhotite. The occurrences of sulfides and PGMs in the Wuxing complex, together with sulfur isotope compositions and PGE patterns, reveal that the PGE enrichment of the Alaskan-type complexes can be attributed to the high-degree partial melting of the mantle source, sulfur involvement in the source, and PGE transportation of hydrous melts.
WOS关键词PLATINUM-GROUP ELEMENTS ; NW CHINA ; SULFIDE MELT ; CRUSTAL EVOLUTION ; LEAD ISOTOPES ; ISLAND-ARC ; CU ; NI ; SULFUR ; DEPOSITS
资助项目National Key Research and Development Program of China[2017YFC0601306]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000540196600002
出版者ELSEVIER
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/96925]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Chen, Kai-Yun; Sakyi, Patrick Asamoah
作者单位1.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China
2.Jilin Jien Nickel Ind Co Ltd, Jilin 132311, Jilin, Peoples R China
3.Univ Ghana, Dept Earth Sci, POB LG 58, Legon, Ghana
4.Collaborat Innovat Ctr Continental Tecton, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Peoples R China
9.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Meng-Meng,Su, Ben-Xun,Wang, Jing,et al. Alaskan-type nature and PGE mineralization of the Wuxing mafic-ultramafic complex in eastern part of the Central Asian Orogenic belt[J]. ORE GEOLOGY REVIEWS,2020,123:24.
APA Cui, Meng-Meng.,Su, Ben-Xun.,Wang, Jing.,Chen, Kai-Yun.,Sakyi, Patrick Asamoah.,...&Gao, Dong-Lin.(2020).Alaskan-type nature and PGE mineralization of the Wuxing mafic-ultramafic complex in eastern part of the Central Asian Orogenic belt.ORE GEOLOGY REVIEWS,123,24.
MLA Cui, Meng-Meng,et al."Alaskan-type nature and PGE mineralization of the Wuxing mafic-ultramafic complex in eastern part of the Central Asian Orogenic belt".ORE GEOLOGY REVIEWS 123(2020):24.

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来源：地质与地球物理研究所

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