Ore-forming fluids associated with granite-hosted gold mineralization at the Sanshandao deposit, Jiaodong gold province, China
文献类型：期刊论文
| 作者 | Fan, HR; Zhai, MG; Xie, YH; Yang, JH |
| 刊名 | MINERALIUM DEPOSITA
 |
| 出版日期 | 2003-09-01 |
| 卷号 | 38期号:6页码:739-750 |
| 关键词 | fluid inclusion orogenic gold deposit Sanshandao Jiaodong |
| ISSN号 | 0026-4598 |
| DOI | 10.1007/s00126-003-0368-x |
| 文献子类 | Article |
| 英文摘要 | The Sanshandao gold deposit, with total resources of more than 60 t of gold, is located in the Jiaodong gold province, the most important gold province of China. The deposit is a typical highly fractured and altered, disseminated gold system, with high-grade, quartz-sulphide vein/veinlet stockworks that cut Mesozoic granodiorite. There are four stages of veins that developed in the following sequence: (1) quartz-K-feldspar-sericite; (2) quartz-pyrite+/-arsenopyrite; (3) quartz-base metal sulfide; and (4) quartz-carbonate. Fluid inclusions in quartz and calcite in vein/veinlet stockworks contain C-O-H fluids of three main types. The first type consists of dilute CO2-H2O fluids coeval with the early vein stage. Molar volumes of these CO2-H2O fluid inclusions, ranging from 50-60 cm(3)/mol, yield estimated minimum trapping pressures of greater than or equal to3 kbar. Homogenization temperatures, obtained mainly from CO2-H2O inclusions with lower CO2 concentration, range from 267-375 degreesC. The second inclusion type, with a CO2-H2O+/-CH4 composition, was trapped during the main mineralizing stages. These fluids may reflect the CO2-H2O fluids that were modified by fluid/rock reactions with altered wallrocks. Isochores for CO2-H2O+/-CH4 inclusions, with homogenization temperatures ranging from 204-325 degreesC and molar volumes from 55 to 70 cm(3)/mol, provide an estimated minimum trapping pressure of 1.2 kbar. The third inclusion type, aqueous inclusions, trapped in cross-cutting microfractures in quartz and randomly in calcite, are post-mineralization, and have homogenization temperatures between 143-228 degreesC and salinities from 0.71-7.86 wt% NaCl equiv. Stable isotope data show that the metamorphic fluid contribution is minimal and that ore fluids are of magmatic origin, most likely sourced from 120-126 Ma mafic to intermediate dikes. This is consistent with the carbonic nature of the fluid, and the cross-cutting nature of those deposits relative to the host Mesozoic granitoid. |
| WOS关键词 | OROGENIC GOLD ; RE-EQUILIBRATION ; EASTERN CHINA ; X PROPERTIES ; RB-SR ; INCLUSIONS ; PENINSULA ; QUARTZ ; EVOLUTION ; EQUATION |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000185140600007 |
| 出版者 | SPRINGER-VERLAG |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/79059]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Fan, HR |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, HR,Zhai, MG,Xie, YH,et al. Ore-forming fluids associated with granite-hosted gold mineralization at the Sanshandao deposit, Jiaodong gold province, China[J]. MINERALIUM DEPOSITA,2003,38(6):739-750. |
| APA | Fan, HR,Zhai, MG,Xie, YH,&Yang, JH.(2003).Ore-forming fluids associated with granite-hosted gold mineralization at the Sanshandao deposit, Jiaodong gold province, China.MINERALIUM DEPOSITA,38(6),739-750. |
| MLA | Fan, HR,et al."Ore-forming fluids associated with granite-hosted gold mineralization at the Sanshandao deposit, Jiaodong gold province, China".MINERALIUM DEPOSITA 38.6(2003):739-750. |
入库方式： OAI收割
来源：地质与地球物理研究所
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