Ore -forming fluid evolution of the Wunugetushan porphyry Cu-Mo deposit, Inner Mongolia: Evidence from the short-wave infrared spectrum, mica composition and fluid inclusion of quartz
文献类型：期刊论文
| 作者 | Chu XiangKai1,2; Shen Ping1,2; Li ChangHao1,2; Lin Qiang3 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 39期号:11页码:3461-3478 |
| ISSN号 | 1000-0569 |
| 关键词 | Wunugetushan Porphyry copper molybdenum deposit Mica Fluid evolution Mineralization process |
| DOI | 10.18654/1000-0569/2023.11.15 |
| 英文摘要 | The Wunugetushan porphyry Cu-Mo deposit in Inner Mongolia is one of the largest porphyry deposits in Northeast China. This deposit is characterized by strong sericite alteration which overprinted the early potassic alteration. It obfuscated the zoning characteristics of alteration and its correlation with different mineralization. In addition, the complex fluid activity makes it difficult to constraint the hydrothermal evolution. Our study takes mica as the fingerprint mineral to constraint the hydrothermal evolution. In order to reveal the mica significance for the hydrothermal evolution and mineralization mechanism of the deposit, electron probe ( EPMA), laser ablation inductively coupled plasma mass spectrometry ( LA-ICP-MS) and short-wave infrared spectrum ( SWIR) were used to constraint the composition of several different micas which developed at different stages or different mineral association mica. The results show that the mica of Wunugetushan porphyry deposit primarily is phengite. The mica associated with molybdenite had high Al, K, Sr and Ba content, and the Al -OH wavelength ranged from 2197nm to 2203nm. Mica associated with chalcopyrite had high Si, Ti, Fe, Mn, Mg, Cu, Zn, Sn, and W, and the Al -OH wavelength ranged from 2200nm to 2206nm. Moreover, in oxidized hydrothermal environment, mica had high Sc, V and W contents. The Al -OH wavelength of mica in Wunugetushan porphyry deposit is related to the distance from the mineralization center, while the wavelength < 2203nm indicates the molybdenum mineralization and closer the mineralization center. Hence, SWIR can be used to prospect the hydrothermal activity center, determine the mineralization type and the prospect area. The evidence of fluid inclusions from quartz, and mica composition suggest that exotic hydrothermal fluid injected before copper precipitation stage. Therefore, mica, as a common alteration and hydrothermal mineral, is of great scientific significance to the research of hydrothermal fluid evolution and exploration. |
| WOS关键词 | WHITE MICA ; HYDROTHERMAL ALTERATION ; NORTHEAST CHINA ; MINERAL EXPLORATION ; MOLYBDENUM SYSTEM ; COPPER-DEPOSIT ; ALTERED ROCKS ; NE CHINA ; U-PB ; GEOCHEMISTRY |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:001097943000015 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111140]  |
| 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 |
| 通讯作者 | Chu XiangKai |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.China Gold Inner Mongolia Min Co Ltd, Manzhouli 021400, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu XiangKai,Shen Ping,Li ChangHao,et al. Ore -forming fluid evolution of the Wunugetushan porphyry Cu-Mo deposit, Inner Mongolia: Evidence from the short-wave infrared spectrum, mica composition and fluid inclusion of quartz[J]. ACTA PETROLOGICA SINICA,2023,39(11):3461-3478. |
| APA | Chu XiangKai,Shen Ping,Li ChangHao,&Lin Qiang.(2023).Ore -forming fluid evolution of the Wunugetushan porphyry Cu-Mo deposit, Inner Mongolia: Evidence from the short-wave infrared spectrum, mica composition and fluid inclusion of quartz.ACTA PETROLOGICA SINICA,39(11),3461-3478. |
| MLA | Chu XiangKai,et al."Ore -forming fluid evolution of the Wunugetushan porphyry Cu-Mo deposit, Inner Mongolia: Evidence from the short-wave infrared spectrum, mica composition and fluid inclusion of quartz".ACTA PETROLOGICA SINICA 39.11(2023):3461-3478. |
入库方式： OAI收割
来源：地质与地球物理研究所
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