The Qiyugou gold-bearing breccia pipes, Xiong'ershan region, central China: fluid-inclusion and stable-isotope evidence for an origin from magmatic fluids
文献类型：期刊论文
| 作者 | Fan, Hong-Rui1; Hu, Fang-Fang1; Wilde, Simon A.2; Yang, Kui-Feng1; Jin, Chen-Wei1 |
| 刊名 | INTERNATIONAL GEOLOGY REVIEW
 |
| 出版日期 | 2011 |
| 卷号 | 53期号:1页码:25-45 |
| 关键词 | fluid inclusion stable isotope gold-bearing breccia pipes Qiyugou Xiong'ershan region |
| ISSN号 | 0020-6814 |
| DOI | 10.1080/00206810902875370 |
| 文献子类 | Article |
| 英文摘要 | Gold ores of the Qiyugou deposit in the eastern part of the Xiong'ershan region are hosted in breccia pipes within a Mesozoic granitic porphyry. Three stages of hydrothermal alteration activity are recognized within the Qiyugou breccias. The first stage of hydrothermal metasomatism produced extensive K-feldspar alteration. The second stage is associated with deposition of gold and base metal sulphides. The third stage is defined by fine quartz-calcite +/- pyrite veinlets containing minor gold. Four types of fluid inclusions are present in quartz and calcite within the breccia matrix and veins. Type I are solid(s)-bearing high-salinity fluid inclusions, with homogenization temperatures up to 420 degrees C and high salinities of 31-47 wt% NaCl equivalent. Type II are two-phase, vapour-rich fluid inclusions that homogenized between 265 and 476 degrees C, with low to moderate salinities (7.2-19.8 wt% NaCl equivalent). Homogenization of Type III two-phase, liquid-rich fluid inclusions takes place at temperatures between 109 and 253 degrees C, with salinities of 3.9-14.3 wt% NaCl equivalent. Type IV two/three-phase carbonic fluid inclusions are only found in calcite-quartz veins cutting wall rocks in the upper parts of the pipes or in adjacent country rocks, with homogenization temperatures that range from 239 to 315 degrees C and salinities between 9.2 and 12.2 wt% NaCl equivalent. The coexistence of Types I and II in the middle parts of the breccia pipes suggests that these fluid inclusions either resulted from trapping of boiling fluids or represented immiscible fluids, most likely derived from a granitic magma. The fluid history, reflected in the fluid-inclusion characteristics, was complex, involving variable amounts of boiling, cooling and mixing in the breccia pipe system. [image omitted] values (-101.7 to -60.1 parts per thousand) and [image omitted] values (0.3-7.5 parts per thousand) calculated from inclusion water in quartz on the basis of mean-to-maximum fluid inclusion homogenization temperatures are intermediate between magmatic water and surface-derived fluids (meteoric water). Ranges for 34S values of ore sulphides (-3.0 to 0.8 parts per thousand) suggest that sulphur originated directly from a magmatic (mantle) source or indirectly from leaching/desulphidation of primary magmatic sulphide minerals. The combined fluid-inclusion and stable-isotope data support previous proposals for a genetic relationship between the Qiyugou ores and magmatic fluids. |
| WOS关键词 | ORE-FORMING FLUIDS ; NORTH-CHINA ; MELTING BEHAVIOR ; SOUTHERN MARGIN ; HENAN PROVINCE ; OROGENIC GOLD ; WESTERN HENAN ; DEPOSITS ; CRATON ; PORPHYRY |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000281582800002 |
| 出版者 | TAYLOR & FRANCIS INC |
| 资助机构 | National Science Foundation of China(40625010 ; National Science Foundation of China(40625010 ; 40721062) ; 40721062) ; National Science Foundation of China(40625010 ; National Science Foundation of China(40625010 ; 40721062) ; 40721062) ; National Science Foundation of China(40625010 ; National Science Foundation of China(40625010 ; 40721062) ; 40721062) ; National Science Foundation of China(40625010 ; National Science Foundation of China(40625010 ; 40721062) ; 40721062) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/74148]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Fan, Hong-Rui |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Curtin Univ Technol, Dept Appl Geol, Perth, WA 6845, Australia |
| 推荐引用方式 GB/T 7714 | Fan, Hong-Rui,Hu, Fang-Fang,Wilde, Simon A.,et al. The Qiyugou gold-bearing breccia pipes, Xiong'ershan region, central China: fluid-inclusion and stable-isotope evidence for an origin from magmatic fluids[J]. INTERNATIONAL GEOLOGY REVIEW,2011,53(1):25-45. |
| APA | Fan, Hong-Rui,Hu, Fang-Fang,Wilde, Simon A.,Yang, Kui-Feng,&Jin, Chen-Wei.(2011).The Qiyugou gold-bearing breccia pipes, Xiong'ershan region, central China: fluid-inclusion and stable-isotope evidence for an origin from magmatic fluids.INTERNATIONAL GEOLOGY REVIEW,53(1),25-45. |
| MLA | Fan, Hong-Rui,et al."The Qiyugou gold-bearing breccia pipes, Xiong'ershan region, central China: fluid-inclusion and stable-isotope evidence for an origin from magmatic fluids".INTERNATIONAL GEOLOGY REVIEW 53.1(2011):25-45. |
入库方式： OAI收割
来源：地质与地球物理研究所
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