Genesis of Sizhuang gold deposit, Jiaodong Peninsula: Evidences from fluid inclusion and quartz solubility modeling
文献类型：期刊论文
| 作者 | Wei Qing1,2; Fan HongRui1; Lan TingGuang1,3; Liu Xuan1; Jiang XiaoHui1,4; Wen BoJie1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2015-04-01 |
| 卷号 | 31期号:4页码:1049-1062 |
| 关键词 | Fluid inclusion Stable isotope Quartz solubility Sizhuang gold deposit Jiaodong |
| 文献子类 | Article |
| 英文摘要 | The Sizhuang gold deposit, located at the northwestern border of Jiaobei terrain, lies in the southward extension of the Jiaojia gold belt. Ore bodies primarily occur as sulfide disseminates and sulfide-bearing quartz veins, and they are hosted in Linglong granite, consisting the footwall of the Jiaojia main fault at Sizhuang. The ore-forming fluids can be divided into two generations, represented by the quartz-K-feldspar veins (pre mineralization period) and quartz-pyrite veins (main mineralization period). Microthermometric investigation reveals that fluid inclusions from quartz in the quartz-pyrite veins homogenized at a temperature range of 133 similar to 310 degrees C, with salinity of 0% similar to 12% NaCleqv. This suggests that the ore-forming fluids are of medium-low temperature, medium-low salinity H2O-CO2-NaCl system. Results of hydrogen and oxygen isotope studies and previous data suggest that ore-forming fluids were a mixture of magmatic and meteoric water with delta O-18(H2O) between -0.5 parts per thousand to 6.1 parts per thousand, and delta D-H2O between -77.7 parts per thousand to -55.0 parts per thousand. Magmatic water is suggested as the dominant component, which was added by meteoric water in later period. delta S-34 values of pyrite range from 7.5 parts per thousand to 9.4 parts per thousand, which are close to the Linglong granites and metamorphic rocks of Jiaodong Group, and this suggest that the ore-forming materials (Au, S etc.) of Sizhuang gold deposit might have sourced from Mesozoic granites. We computed quartz solubility in the ore-forming fluids of Sizhuang gold deposit, using our newly established model of quartz solubility in H2O-CO2-NaCl system up to 1000 degrees C and 1.5GPa, and revealed that quartz solubility is 0.015mol/kg; this is conformed to Jiaodong geological phenomenon. The quartz solubility of ore-forming fluid is very low in the main mineralization period, and it is very susceptible to the physicochemical conditions of the fluid. The SiO2 will precipitate when the ore-forming fluids evolved in later stage with meteoric water adding or when it transferred to the host structure accompanying pressure dropping, and the stability of Au-S complex in the residual fluid is interrupted, at last it will lead to the large-scale Au precipitation. These may be the cause of the gold mineralization of Sizhuang gold deposit, and may be one important factor controlling the strong silica alteration and formation of quartz veins at Sizhuang and even in the whole Jiaodong area |
| WOS关键词 | NORTH CHINA CRATON ; ORE-FORMING FLUIDS ; EASTERN CHINA ; OROGENIC GOLD ; RB-SR ; MINERALIZATION ; PROVINCE ; METALLOGENY ; SYSTEMATICS ; GRANITOIDS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000353869400013 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62603]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.China Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China 4.CNNC Beijing Res Inst Uranium Geol, Div Geol & Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei Qing,Fan HongRui,Lan TingGuang,et al. Genesis of Sizhuang gold deposit, Jiaodong Peninsula: Evidences from fluid inclusion and quartz solubility modeling[J]. ACTA PETROLOGICA SINICA,2015,31(4):1049-1062. |
| APA | Wei Qing,Fan HongRui,Lan TingGuang,Liu Xuan,Jiang XiaoHui,&Wen BoJie.(2015).Genesis of Sizhuang gold deposit, Jiaodong Peninsula: Evidences from fluid inclusion and quartz solubility modeling.ACTA PETROLOGICA SINICA,31(4),1049-1062. |
| MLA | Wei Qing,et al."Genesis of Sizhuang gold deposit, Jiaodong Peninsula: Evidences from fluid inclusion and quartz solubility modeling".ACTA PETROLOGICA SINICA 31.4(2015):1049-1062. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。