Petrological features and implications for mineralization of the Poshi mafic-ultramafic intrusion in Beishan area, Xinjiang
文献类型：期刊论文
| 作者 | Su BenXun1; Qin KeZhang1; Tang DongMei1; Deng Gang2; Xiao QingHua1; Sun He1; Lu HongFei2; Dai YuCai2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 27期号:12页码:3627-3639 |
| 关键词 | Poshi Mafic-ultramafic Intrusion Fractional Crystallization Alteration Reaction Ni-cu Mineralization Beishan Xinjiang |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Poshi mafic-ultramafic intrusion, located in Beishan area (Xinjiang), has the components of gabbro, dunite and lherzolite in its drill core profile, in which mineral modal varies continuously, and olivine, clinopyroxene and spinel show systematically compositional variations. Marginal compositional reversals' appear in the lherzolites at the bottom of the profile. These features suggest that the formation of the Poshi intrusion was mainly controlled by fractional crystallization and also had contributions from crustal contamination. The presence of amphibole as reaction rim of pyroxene, breakdown of spinel, and chemical variations of hydrous minerals, indicate that the intrusion had been subjected to post-cumulus alterative reaction. The association of discrete sulfide grains and fine veins with early-stage formed minerals (olivine and spinel) suggests that sulfide segregation occurred in the early stage of the magmatic evolution. The crystallization and subsequent precipitation of sulfides was not only related to crustal contamination, but also closely related to post-cumulus alterative reaction as recorded by their occurrence always with hydrous minerals (e. g. phlogopite) and altered minerals (e. g. amphibole and serpentine). |
| WOS关键词 | ORE-FORMING PROCESSES ; ASIAN OROGENIC BELT ; NW CHINA ; CRUSTAL CONTAMINATION ; LAYERED INTRUSIONS ; NORTHERN XINJIANG ; ISOTOPIC ANALYSES ; EASTERN XINJIANG ; SULFIDE DEPOSITS ; NORTHWEST CHINA |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000299019000010 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/73720]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Su BenXun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Xinjiang Bur Geol & Mineral Resources, Geol Party 6, Hami 839000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su BenXun,Qin KeZhang,Tang DongMei,et al. Petrological features and implications for mineralization of the Poshi mafic-ultramafic intrusion in Beishan area, Xinjiang[J]. ACTA PETROLOGICA SINICA,2011,27(12):3627-3639. |
| APA | Su BenXun.,Qin KeZhang.,Tang DongMei.,Deng Gang.,Xiao QingHua.,...&Dai YuCai.(2011).Petrological features and implications for mineralization of the Poshi mafic-ultramafic intrusion in Beishan area, Xinjiang.ACTA PETROLOGICA SINICA,27(12),3627-3639. |
| MLA | Su BenXun,et al."Petrological features and implications for mineralization of the Poshi mafic-ultramafic intrusion in Beishan area, Xinjiang".ACTA PETROLOGICA SINICA 27.12(2011):3627-3639. |
入库方式： OAI收割
来源：地质与地球物理研究所
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