Infrared microthermometry of fluid inclusions in transparent to opaque minerals: challenges and new insights
文献类型：期刊论文
| 作者 | Peng, Hong-Wei1,2; Fan, Hong-Rui1,2,3; Santosh, M.4,5; Hu, Fang-Fang1,2,3; Jiang, Peng6 |
| 刊名 | MINERALIUM DEPOSITA
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 55期号:7页码:1425-1440 |
| 关键词 | Infrared microscope Deviation of IR microthermometry Absorption of IR light energy FTIR Major and trace element substitution Improved cycling method |
| ISSN号 | 0026-4598 |
| DOI | 10.1007/s00126-019-00950-z |
| 英文摘要 | Infrared (IR) studies of fluid inclusions in opaque minerals provide direct insights into the ore-forming fluids. However, the challenge posed by the "warming effect" of IR light during microthermometry remains unresolved. Here we address this problem and show that the deviation in temperature of phase changes within fluid inclusions caused by IR light is more common than what was thought before. Our results reveal that transparent to translucent minerals (e.g., quartz, sphalerite) also absorb IR energy. Since IR absorption is influenced by the host mineral, the fluid inclusions hosted by different minerals exhibit different degrees of deviation in temperature during microthermometry. The Fourier transform infrared (FTIR) spectra do not display a consistent correlation between the band gap energy of a mineral and its absorption of IR energy. Minerals with low band gap energy, such as pyrite, absorb limited IR energy, resulting in small deviations of fluid inclusion data. In contrast, this deviation could be significant for fluid inclusions hosted in minerals with a relatively high band gap energy, such as iron-rich sphalerite and wolframite. Substitution of iron increases the absorption of IR energy in these minerals. The substitution of trace elements may also play a role. Our quantitative analyses confirm that using the lowest possible IR light intensity with the smallest diaphragm minimizes the "warming effect" of IR light. We also propose an improved cycling method as a better option where high IR light intensity is required. |
| WOS关键词 | TOYOHA POLYMETALLIC DEPOSIT ; ORE MINERALS ; LIGHT MICROTHERMOMETRY ; GOLD DEPOSITS ; MICROSCOPY ; WOLFRAMITE ; PYRITE ; QUARTZ ; CONSTRAINTS ; SPHALERITE |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000563170900013 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/97647]  |
| 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 | Fan, Hong-Rui |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 4.China Univ Geosci Beijing, Sch Earth Sci & Resources, 29 Xueyuan Rd, Beijing 100083, Peoples R China 5.Univ Adelaide, Dept Earth Sci, Adelaide, SA 5005, Australia 6.Univ Florida, Dept Geol Sci, Gainesville, FL 32611 USA |
| 推荐引用方式 GB/T 7714 | Peng, Hong-Wei,Fan, Hong-Rui,Santosh, M.,et al. Infrared microthermometry of fluid inclusions in transparent to opaque minerals: challenges and new insights[J]. MINERALIUM DEPOSITA,2020,55(7):1425-1440. |
| APA | Peng, Hong-Wei,Fan, Hong-Rui,Santosh, M.,Hu, Fang-Fang,&Jiang, Peng.(2020).Infrared microthermometry of fluid inclusions in transparent to opaque minerals: challenges and new insights.MINERALIUM DEPOSITA,55(7),1425-1440. |
| MLA | Peng, Hong-Wei,et al."Infrared microthermometry of fluid inclusions in transparent to opaque minerals: challenges and new insights".MINERALIUM DEPOSITA 55.7(2020):1425-1440. |
入库方式： OAI收割
来源：地质与地球物理研究所
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