Ore-forming fluid geochemistry of Yangchang quartz vein molybdenum deposit in Xilamulun molybdenum metallogenic belt, Inner Mongolia
文献类型：期刊论文
| 作者 | Zhang ZuoLun1,2; Liu JianMing2; Chu ShaoXiong2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2012-02-01 |
| 卷号 | 28期号:2页码:391-400 |
| 关键词 | Fluid inclusions Hydrogen and oxygen isotope Yangchang Xilamulun |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The Yangchang Mo deposit is located in the Xilamulun molybdenum metallogenic belt on northern margin of North China Craton, Inner Mongolia. The mineralization is occurred within the NW- to NNW-trending faults and fractures hosted by the Yanshanian biotite monzogranite. The ore-forming hydrothermal process can be subdivided into four stages: quartz vein stage (I), quartz-pyrite stage (II-1), quartz-pyrite-molybdenite-chalcopyrite-galena-sphalerite stage (II-2) and carbonate stage(III). Three types of fluid inclusions are observed in quartz crystals, i.e. liquid-rich (V-H2O <50%) inclusion, gas-rich (V-H2O = 50% similar to 90%) inclusion and vapor inclusions. Homogenization temperatures of I, II-1, II-2 stages are 173 similar to 280 degrees C, 180 similar to 467 degrees C, 151 similar to 366 degrees C, respectively. From I stage to II-1 stage the temperatures become higher, suggesting the magmatic water was introduced into the mineralizing system. Salinities of 1, II-1, II-2 stages are in the range of 4. 03% similar to 10. 61% NaCleqv, 2.07% similar to 10.36% NaClegv, 2.41% similar to 9. 98% NaClegv, respectively. The composition of the hydrothermal fluids at different stages are mainly H2O (>94. 39mol%), with minor CO2, N-2, CH4, C2H6 Ar, H2S, and Na+, HS-, Cl- ions. These suggest the Yangchang Mo deposit was formed in reduction condition and the ore-forming fluids were of the NaCl-H2O +/- CO2 system. Hydrogen and oxygen isotopes of fluid inclusions in various mineralization stages are -119. 66 parts per thousand similar to -98. 79 parts per thousand and -0. 08 parts per thousand similar to 1. 90 parts per thousand respectively, indicating that the ore-forming fluids were the mixture of magmatic; water and meteoric water. It is suggested that the mixing of different fluids with distinct natures might be responsible for the precipitation of molybdenite. |
| WOS关键词 | NORTH CHINA CRATON ; DA HINGGAN MOUNTAINS ; PORPHYRY MO DEPOSIT ; GEOLOGICAL CHARACTERISTICS ; SONGXIAN COUNTY ; COPPER DEPOSIT ; SOUTH SEGMENT ; GOLD DEPOSIT ; INCLUSION ; ISOTOPE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000301991500004 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84536]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang ZuoLun |
| 作者单位 | 1.China Railway Resources Explorat Co LTD, China Railway Resources Grp, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang ZuoLun,Liu JianMing,Chu ShaoXiong. Ore-forming fluid geochemistry of Yangchang quartz vein molybdenum deposit in Xilamulun molybdenum metallogenic belt, Inner Mongolia[J]. ACTA PETROLOGICA SINICA,2012,28(2):391-400. |
| APA | Zhang ZuoLun,Liu JianMing,&Chu ShaoXiong.(2012).Ore-forming fluid geochemistry of Yangchang quartz vein molybdenum deposit in Xilamulun molybdenum metallogenic belt, Inner Mongolia.ACTA PETROLOGICA SINICA,28(2),391-400. |
| MLA | Zhang ZuoLun,et al."Ore-forming fluid geochemistry of Yangchang quartz vein molybdenum deposit in Xilamulun molybdenum metallogenic belt, Inner Mongolia".ACTA PETROLOGICA SINICA 28.2(2012):391-400. |
入库方式： OAI收割
来源：地质与地球物理研究所
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