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LM-19 lawsonite: a potential reference material for in situ oxygen isotope determination in lawsonite by ion microprobe

文献类型：期刊论文

作者Melnik, Aleksey E.1; Li, Qiu-Li1,4; Li, Jiao1; Tang, Guo-Qiang1; Feng, Lian-Jun1; Li, Jin-Hua3,4; Mao, Qian1; Putlitz, Benita2; Li, Xian-Hua1,4
刊名JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
出版日期2022-12-01
页码8
ISSN号0267-9477
DOI10.1039/d2ja00301e
英文摘要Lawsonite is a water-rich mineral that has occurred in the geological record since the late Neoproterozoic era. This mineral forms at low-temperature and high- to ultrahigh-pressure conditions in cold subduction zones and has been predicted to be stable down to ca. 300 km. Therefore, lawsonite has been discussed as an essential carrier of water to mantle depths, and its oxygen isotopic composition has been considered a promising tool in characterizing subduction-related fluids down to the deeper upper mantle. In this study, we characterize LM-19 lawsonite in detail as a potential working reference material for oxygen isotopic microanalysis. Multiple LM-19 measurements by secondary ion mass spectrometry reveal that it is homogeneous in oxygen isotopes at the micro-scale. Precise oxygen isotopic analysis by isotope ratio mass spectrometry yields a mean delta O-18 of 8.98 +/- 0.10 parts per thousand (1SD) that we recommend as the reference value for the LM-19 lawsonite. This reference material is most suitable for determination of oxygen isotopes in unknown lawsonite samples with low Cr (Cr2O3 <0.3 wt%) and low to moderate total Ti and Fe concentrations (i.e., TiO2 + Fe2O3* <1.36 wt%). The main limitation is that the chemical variability of LM-19 in Ti and Fe may cause a minor matrix effect resulting in the average delta O-18 bias of -0.30 parts per thousand for the regions enriched in total Ti and Fe contents. However, these enriched regions most likely compose only a minor portion of the LM-19 lawsonite (i.e., ca. 20%), meaning that the matrix effect should not significantly affect the accuracy of in situ oxygen isotopic analysis.
WOS关键词TRACE-ELEMENT ; HIGH-PRESSURE ; ECLOGITE ; METAMORPHISM ; EVOLUTION ; REDISTRIBUTION ; FRACTIONATION ; GEOCHEMISTRY ; BLUESCHIST ; STABILITY
资助项目National Natural Science Foundation of China[41890831] ; National Natural Science Foundation of China[42150410391] ; National Natural Science Foundation of China[42003012] ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS)[2021PD03]
WOS研究方向Chemistry ; Spectroscopy
语种英语
WOS记录号WOS:000894208700001
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) ; IGG International Fellowship Initiative (IIFI) of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS)
源URL[http://ir.iggcas.ac.cn/handle/132A11/106988]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Melnik, Aleksey E.; Li, Xian-Hua
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Lausanne, Inst Earth Sci, CH-1015 Lausanne, Switzerland
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Melnik, Aleksey E.,Li, Qiu-Li,Li, Jiao,et al. LM-19 lawsonite: a potential reference material for in situ oxygen isotope determination in lawsonite by ion microprobe[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2022:8.
APA Melnik, Aleksey E..,Li, Qiu-Li.,Li, Jiao.,Tang, Guo-Qiang.,Feng, Lian-Jun.,...&Li, Xian-Hua.(2022).LM-19 lawsonite: a potential reference material for in situ oxygen isotope determination in lawsonite by ion microprobe.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,8.
MLA Melnik, Aleksey E.,et al."LM-19 lawsonite: a potential reference material for in situ oxygen isotope determination in lawsonite by ion microprobe".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY (2022):8.

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来源：地质与地球物理研究所

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