Cassiterite oxygen isotopes in magmatic-hydrothermal systems: in situ microanalysis, fractionation factor, and applications
文献类型：期刊论文
| 作者 | Li, Yang7; He, Sheng1; Zhang, Rong-Qing6; Bi, Xian-Wu5; Feng, Lian-Jun7; Tang, Guo-Qiang7; Wang, Wen-Zhong3,4; Huang, Fang2; Li, Xian-Hua7 |
| 刊名 | MINERALIUM DEPOSITA
 |
| 出版日期 | 2021-09-13 |
| 页码 | 19 |
| ISSN号 | 0026-4598 |
| 关键词 | Reference material Crystallographic orientation effects Fluid mixing Isotope thermometry Sn(-W) deposit Fluid source and evolution |
| DOI | 10.1007/s00126-021-01068-x |
| 英文摘要 | Tin and tungsten are important metals for the industrializing society. Deciphering the origin and evolution of hydrothermal fluids responsible for their formation is critical to underpin genetic models of ore formation. Traditional approaches obtain isotopic information mainly from bulk analysis of both ore and gangue minerals, or less frequently from in situ analysis of gangue minerals, which either bear inherited complexities and uncertainties or are indirect constraints. Hence, directly obtaining isotopic information from ore minerals such as cassiterite by in situ techniques is warranted. However, this has been hampered by challenges from both analytical and applicational aspects. In this study, we first demonstrate a lack of crystallographic orientation effects during cassiterite ion microprobe oxygen isotope analysis. Along with our newly developed matrix-matched reference material, the Yongde-Cst, which has a recommended delta O-18 value of 1.36 +/- 0.16 parts per thousand (VSMOW) as defined by gas source isotope ratio mass spectrometry, in situ oxygen isotope analysis of cassiterite now is possible. We further refine the oxygen isotope fractionation (1000 ln alpha) for quartz-cassiterite by first-principles calculations, which is given by the equation of 1.259 x 10(6)/T-2 + 8.15 x 10(3)/T - 4.72 (T is temperature in Kelvin). The 1000 ln alpha for quartz-cassiterite has a sensitive response to temperature, and makes cassiterite-quartz an excellent mineral pair in oxygen isotope thermometry, as described by the equation of T (celcius) = 2427 x (delta O-18(qtz) - delta O-18(cst))(-0.4326) - 492.4. Using the well-established 1000 ln alpha of quartz-water, 1000 ln alpha of cassiterite-water is derived as 2.941 x 10(6)/T-2 - 11.45 x 10(3)/T + 4.72 (T in Kelvin), which shows a weak response to temperature. This makes cassiterite an ideal mineral from which to derive delta O-18 of fluids as robust temperature estimates are no longer a prerequisite. We have applied oxygen isotope analysis to cassiterite samples from six Sn(-W) deposits in China. The results show considerable variability in delta O-18 values both within a single deposit and among studied deposits. Combining the delta O-18 of cassiterite samples and the equilibrium oxygen isotope fractionation, we find that the delta O-18 values of ore-forming fluids show a strong magmatic affinity with variable but mostly no to low degree involvements (similar to 0-10%) of meteoric water, hence our results invite a reassessment on the extent and role of meteoric water in Sn-W mineralization. This study demonstrates that in situ oxygen isotope analysis of cassiterite is a promising tool to refine sources of ore-forming fluids, and to decode hydrothermal dynamics controlling tin and tungsten mineralization. |
| WOS关键词 | MASS-SPECTROMETRY SIMS ; U-PB AGES ; FLUID INCLUSIONS ; GEJIU DISTRICT ; ORTHO-PYROXENE ; NANLING RANGE ; SN DEPOSIT ; TIN ; CHINA ; GENESIS |
| 资助项目 | National Key Research and Development Program of China[2018YFA0702600] ; National Natural Science Foundation of China[42022022] ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; CNNC Science Fund for Talented Young Scholars[QNYC2019-2] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000695183900001 |
| 资助机构 | National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; Pioneer Hundred Talents Program of Chinese Academy of Sciences ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars ; CNNC Science Fund for Talented Young Scholars |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102642]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Li, Yang |
| 作者单位 | 1.Beijing Res Inst Uranium Geol, Beijing 100029, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, Lab Seismol & Phys Earths Interior, Hefei 230026, Anhui, Peoples R China 3.Carnegie Inst Sci, Earth & Planets Lab, Washington, DC 20015 USA 4.UCL, Dept Earth Sci, London WC1E 6BT, England 5.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Peoples R China 6.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing 210046, Peoples R China 7.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yang,He, Sheng,Zhang, Rong-Qing,et al. Cassiterite oxygen isotopes in magmatic-hydrothermal systems: in situ microanalysis, fractionation factor, and applications[J]. MINERALIUM DEPOSITA,2021:19. |
| APA | Li, Yang.,He, Sheng.,Zhang, Rong-Qing.,Bi, Xian-Wu.,Feng, Lian-Jun.,...&Li, Xian-Hua.(2021).Cassiterite oxygen isotopes in magmatic-hydrothermal systems: in situ microanalysis, fractionation factor, and applications.MINERALIUM DEPOSITA,19. |
| MLA | Li, Yang,et al."Cassiterite oxygen isotopes in magmatic-hydrothermal systems: in situ microanalysis, fractionation factor, and applications".MINERALIUM DEPOSITA (2021):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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