Multi-stage hydrothermal processes at the Laozuoshan gold deposit in NE China: Insights from textures and compositions of sulfide assemblages
文献类型：期刊论文
| 作者 | Meng, Lin2,3; Huang, Fei2,3; Gao, Wenyuan2,3; Wang, Daoheng3; Zhu, Jianxi2; Xing, Changming2; Tan, Wei2; Tang, Xu1 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 117页码:22 |
| 关键词 | Skarn gold deposit Hydrothermal Arsenopyrite Pyrrhotite Dissolution-reprecipitation |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2019.103275 |
| 英文摘要 | The Laozuoshan gold deposit is a large gold deposit which experienced the early hydrothermal mineralization and the late hydrothermal mineralization in Jiamusi Massif, Northeast China. The Jiamusi Massif hosts numerous gold deposits that are commonly considered as products of the metamorphic hydrothermal process during two oceanic subductions episodes. In this study, we report detailed textures observations, identify the sulfides phases by the laser Raman spectroscopy, and obtain in situ composition data with electron probe micro analysis to further understand the formation and metasomatism of multi-stage sulfides deposition in the Laozuoshan gold deposit. The paragenetic relationship between pyrite and marcasite at the nanoscale was also clarified by focused ion beam scanning electron microscopy and transmission electron microscopy. According to the observed textural relationships among ore and gangue minerals, the early hydrothermal mineralization period can be divided into three stages (Stage I to Stage III), and the late hydrothermal mineralization period into four stages (Stage IV to Stage VII). The sulfides are mainly pyrrhotite (Po-1) in Stage I, with minor chalcopyrite, arsenopyrite, and pyrite. The Ag-rich (averaging 15.44 wt%) electrum (Au-1) is hosted in arsenopyrite, which is also rich in cobalt (averaging 2.69 wt%). Pyrite (Py-2) is the main sulfide in Stage II, with minor chalcedony and calcite. The mineral stability relationships in both Stage I and Stage II confirm that there was an increase in sulfur and oxygen fugacities and a decrease in temperature. The sulfides are mainly arsenopyrite (Apy-2) in Stage III, with minor native golds and tellurbismuth. The native golds (Au-2) average 8.02 wt% silver. Arsenopyrite geothermometers indicate precipitation temperatures between 420 and 390 degrees C for Stage III. The sulfur and oxygen fugacities of the ore-related fluids were below the pyrite-pyrrhotite buffer during Stage III, revealing a reduced fluids system. In the late hydrothermal mineralization period, multiple magmatic activities caused multi-stage hydrothermal fluids events. In Stage VI, the pyrrhotite replaced by marcasite and pyrite through the dissolution-reprecipitation mechanism, indicating the increase in pH and oxygen fugacity of the fluids, and alteration from weakly acidic and weakly reduced conditions to neutral and weakly oxidizing conditions. The mineralogical and compositional evolution of the sulfides in the Laozuoshan gold deposit constrain the physicochemical conditions of multi-stage ore-forming fluids, which is of considerable significance in understanding the metamorphic-hydrothermal superimposed gold-bearing fluids evolved in the Jiamusi Massif. |
| WOS关键词 | REACTIONS FORMING PYRITE ; HEILONGJIANG PROVINCE ; AQUEOUS-SOLUTIONS ; MARCASITE ; MINERALIZATION ; ARSENOPYRITE ; REPLACEMENT ; SOLUBILITY ; CHEMISTRY ; BEARING |
| 资助项目 | National Natural Science Foundation of China[41272062] ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS)[KLMM20170103] ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia[DBY KF-18-04] ; Key Laboratory of Earth and Planetary Physics (IGGCAS)[DQXX201706] ; Fundamental Research Funds for the Central Universities, China[N170106001] ; China Postdoctoral Science Foundation[2019M651136] |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000515206900037 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS) ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS) ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia ; Key Laboratory of Earth and Planetary Physics (IGGCAS) ; Key Laboratory of Earth and Planetary Physics (IGGCAS) ; Fundamental Research Funds for the Central Universities, China ; Fundamental Research Funds for the Central Universities, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS) ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS) ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia ; Key Laboratory of Earth and Planetary Physics (IGGCAS) ; Key Laboratory of Earth and Planetary Physics (IGGCAS) ; Fundamental Research Funds for the Central Universities, China ; Fundamental Research Funds for the Central Universities, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS) ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS) ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia ; Key Laboratory of Earth and Planetary Physics (IGGCAS) ; Key Laboratory of Earth and Planetary Physics (IGGCAS) ; Fundamental Research Funds for the Central Universities, China ; Fundamental Research Funds for the Central Universities, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS) ; Key Laboratory of Mineralogy and Metallogeny (GIGCAS) ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia ; MLR Key Laboratory of Mineral Resources Evaluation in Northeast Asia ; Key Laboratory of Earth and Planetary Physics (IGGCAS) ; Key Laboratory of Earth and Planetary Physics (IGGCAS) ; Fundamental Research Funds for the Central Universities, China ; Fundamental Research Funds for the Central Universities, China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95640]  |
| 专题 | 地质与地球物理研究所_科技支撑系统 |
| 通讯作者 | Huang, Fei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Electron Microscopy Lab, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 3.Northeastern Univ, Sch Resources & Civil Engn, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Lin,Huang, Fei,Gao, Wenyuan,et al. Multi-stage hydrothermal processes at the Laozuoshan gold deposit in NE China: Insights from textures and compositions of sulfide assemblages[J]. ORE GEOLOGY REVIEWS,2020,117:22. |
| APA | Meng, Lin.,Huang, Fei.,Gao, Wenyuan.,Wang, Daoheng.,Zhu, Jianxi.,...&Tang, Xu.(2020).Multi-stage hydrothermal processes at the Laozuoshan gold deposit in NE China: Insights from textures and compositions of sulfide assemblages.ORE GEOLOGY REVIEWS,117,22. |
| MLA | Meng, Lin,et al."Multi-stage hydrothermal processes at the Laozuoshan gold deposit in NE China: Insights from textures and compositions of sulfide assemblages".ORE GEOLOGY REVIEWS 117(2020):22. |
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。