MK-1 Orthopyroxene—A New Potential Reference Material for In-Situ Microanalysis
Orthopyroxene, an important phase in mantle-derived rocks, has become a powerful tool to unravel mantle nature and magma processes. However, the applications have been hindered by the lag in the development of analytical techniques, such as shortage of reference materials. Orthopyroxene grains deriv...
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| Format: | Article |
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MDPI AG
2021-11-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/11/12/1321 |
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| author | Lihui Jia Qian Mao Bin Su Shitou Wu Liangliang Huang Jiangyan Yuan Di Zhang Yi Chen |
| author_facet | Lihui Jia Qian Mao Bin Su Shitou Wu Liangliang Huang Jiangyan Yuan Di Zhang Yi Chen |
| author_sort | Lihui Jia |
| collection | DOAJ |
| description | Orthopyroxene, an important phase in mantle-derived rocks, has become a powerful tool to unravel mantle nature and magma processes. However, the applications have been hindered by the lag in the development of analytical techniques, such as shortage of reference materials. Orthopyroxene grains derived from an ultramafic intrusion at the Mogok metamorphic belt (Myanmar) were evaluated for the potential use of orthopyroxene as a reference material for in-situ microanalysis. Approximately 20 g of 0.5–3 mm pure orthopyroxene grains were separated under binocular microscope and analyzed using EPMA, LA-ICPMS, and bulk analytical methods (XRD, XRF, and solution-ICPMS) for major and trace elements at four institutions. Eleven core-to-rim profiles carried out using EPMA and twelve core-to-rim profiles determined using LA-ICPMS suggest that MK-1 orthopyroxene grains are sufficiently homogeneous, with RSD < ±2% (1σ) for major elements (Mg, Si, and Fe) and RSD < ±10% (1σ) for trace elements (Na, Al, Ca, Ti, Cr, Co, Zn, Ni, Mn, Sc, and V). In addition, the composition of MK-1 orthopyroxene was also measured by XRF and solution-ICPMS measurements in two different laboratories, to compare with the results measured using EPMA and LA-ICPMS. The results indicated a good agreement with RSE < ±2% (1σ) for major elements and RSE < ±5% (1σ) for most trace elements, except for Na (±9.73%) and Ti (±6.80%). In an overall assessment of these data, MK-1 orthopyroxene can be considered as a reference material for in-situ microanalysis, which would provide solid trace elements data for a better understanding of mantle source and magmatic evolution. |
| first_indexed | 2024-03-10T03:31:04Z |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-10T03:31:04Z |
| publishDate | 2021-11-01 |
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| record_format | Article |
| series | Minerals |
| spelling | doaj.art-2606c0dee77247108e0d0c739b9a553b2023-11-23T09:41:09ZengMDPI AGMinerals2075-163X2021-11-011112132110.3390/min11121321MK-1 Orthopyroxene—A New Potential Reference Material for In-Situ MicroanalysisLihui Jia0Qian Mao1Bin Su2Shitou Wu3Liangliang Huang4Jiangyan Yuan5Di Zhang6Yi Chen7State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaOrthopyroxene, an important phase in mantle-derived rocks, has become a powerful tool to unravel mantle nature and magma processes. However, the applications have been hindered by the lag in the development of analytical techniques, such as shortage of reference materials. Orthopyroxene grains derived from an ultramafic intrusion at the Mogok metamorphic belt (Myanmar) were evaluated for the potential use of orthopyroxene as a reference material for in-situ microanalysis. Approximately 20 g of 0.5–3 mm pure orthopyroxene grains were separated under binocular microscope and analyzed using EPMA, LA-ICPMS, and bulk analytical methods (XRD, XRF, and solution-ICPMS) for major and trace elements at four institutions. Eleven core-to-rim profiles carried out using EPMA and twelve core-to-rim profiles determined using LA-ICPMS suggest that MK-1 orthopyroxene grains are sufficiently homogeneous, with RSD < ±2% (1σ) for major elements (Mg, Si, and Fe) and RSD < ±10% (1σ) for trace elements (Na, Al, Ca, Ti, Cr, Co, Zn, Ni, Mn, Sc, and V). In addition, the composition of MK-1 orthopyroxene was also measured by XRF and solution-ICPMS measurements in two different laboratories, to compare with the results measured using EPMA and LA-ICPMS. The results indicated a good agreement with RSE < ±2% (1σ) for major elements and RSE < ±5% (1σ) for most trace elements, except for Na (±9.73%) and Ti (±6.80%). In an overall assessment of these data, MK-1 orthopyroxene can be considered as a reference material for in-situ microanalysis, which would provide solid trace elements data for a better understanding of mantle source and magmatic evolution.https://www.mdpi.com/2075-163X/11/12/1321MK-1orthopyroxenereference materialtrace elementEPMA |
| spellingShingle | Lihui Jia Qian Mao Bin Su Shitou Wu Liangliang Huang Jiangyan Yuan Di Zhang Yi Chen MK-1 Orthopyroxene—A New Potential Reference Material for In-Situ Microanalysis Minerals MK-1 orthopyroxene reference material trace element EPMA |
| title | MK-1 Orthopyroxene—A New Potential Reference Material for In-Situ Microanalysis |
| title_full | MK-1 Orthopyroxene—A New Potential Reference Material for In-Situ Microanalysis |
| title_fullStr | MK-1 Orthopyroxene—A New Potential Reference Material for In-Situ Microanalysis |
| title_full_unstemmed | MK-1 Orthopyroxene—A New Potential Reference Material for In-Situ Microanalysis |
| title_short | MK-1 Orthopyroxene—A New Potential Reference Material for In-Situ Microanalysis |
| title_sort | mk 1 orthopyroxene a new potential reference material for in situ microanalysis |
| topic | MK-1 orthopyroxene reference material trace element EPMA |
| url | https://www.mdpi.com/2075-163X/11/12/1321 |
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