Platinum-group element geochemistry of the Hongge Fe-V-Ti deposit in the Pan-Xi area, southwestern China
文献类型：期刊论文
| 作者 | Zhong, H; Zhou, XH; Zhou, MF; Sun, M; Liu, BG |
| 刊名 | MINERALIUM DEPOSITA
 |
| 出版日期 | 2002-03-01 |
| 卷号 | 37期号:2页码:226-239 |
| 关键词 | platinum-group elements Fe-V-Ti deposit Hongge layered intrusion Pan-Xi area southwestern China |
| ISSN号 | 0026-4598 |
| DOI | 10.1007/s00126-001-0220-0 |
| 文献子类 | Article |
| 英文摘要 | Mafic and ultramafic intrusions in the Pan-Xi area along the western margin of the Yangtze block, southwestern China, are spatially associated with the Late Permian Emeishan flood basalts of the Emeishan Large Igneous Province. The Hongge layered intrusion is one of the plutonic bodies of this province and hosts a giant Fe-V-Ti deposit. This intrusion has three zones: a lower, olivine clinopyroxenite zone, a middle, clinopyroxenite zone, and an upper, gabbro zone. Each of these zones consists of one or two compositional cycles, which have distinct Mg-# values, TiO2 concentrations and total REE contents. The middle clinopyroxenite zone and upper gabbro zone contain thick (14-84 m) magnetite-mineralized layers. Samples from the lower olivine clinopyroxenite zone and middle clinopyroxenite zone of the Hongge intrusion are enriched in platinum and palladium relative to iridium and ruthenium. Rocks of the lower olivine clinopyroxenite zone have Pd/Ir ratios (1.8-22.3) lower than those of the middle clinopyroxenite zone (6.2 to 83 in its lower part and 3.6 to 49 in its upper part). The Pd/Ir ratios increase progressively upwards in each cyclic unit. Chromite is the major phase controlling concentrations of iridium and ruthenium. The Cu/Pd ratios at the bottom of each cyclic unit are close to that of the mantle and increase upwards. This variation suggests that each cyclic unit represents a new batch of magma, and sulfide mineral segregation removes PGE (platinum-group elements), Ni and Cu. Each cyclic unit in the Hongge layered intrusion might have resulted from crystal fractionation and mixing between a primary and evolved magna. The high Cu/ Pd, Ti/Pd, Ni/Pd and Cu/Ir ratios of the intrusion suggest that the sulfide mineral segregation may have played an important role in PGE differentiation. If this interpretation is correct, then there is a potential to find economic PGE-rich horizon in the Hongge-type intrusions in the region. |
| WOS关键词 | WEST PILBARA BLOCK ; BUSHVELD COMPLEX ; SULFIDE LIQUID ; BASALT MELT ; GROUP MINERALIZATION ; SOUTH-AFRICA ; ORIGIN ; PD ; PALLADIUM ; IRIDIUM |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000177382800007 |
| 出版者 | SPRINGER-VERLAG |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/77403]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhong, H |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Lab Lithosphere Tecton Evolut, Beijing 100029, Peoples R China 2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, H,Zhou, XH,Zhou, MF,et al. Platinum-group element geochemistry of the Hongge Fe-V-Ti deposit in the Pan-Xi area, southwestern China[J]. MINERALIUM DEPOSITA,2002,37(2):226-239. |
| APA | Zhong, H,Zhou, XH,Zhou, MF,Sun, M,&Liu, BG.(2002).Platinum-group element geochemistry of the Hongge Fe-V-Ti deposit in the Pan-Xi area, southwestern China.MINERALIUM DEPOSITA,37(2),226-239. |
| MLA | Zhong, H,et al."Platinum-group element geochemistry of the Hongge Fe-V-Ti deposit in the Pan-Xi area, southwestern China".MINERALIUM DEPOSITA 37.2(2002):226-239. |
入库方式： OAI收割
来源：地质与地球物理研究所
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