DOI: 10.1016/j.epsl.2020.116697
论文题名: Mid-infrared spectroscopy of crystalline plagioclase feldspar samples with various Al,Si order and implications for remote sensing of Mercury and other terrestrial Solar System objects
作者: Reitze M.P. ; Weber I. ; Morlok A. ; Hiesinger H. ; Bauch K.E. ; Stojic A.N. ; Helbert J.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 554 语种: 英语
中文关键词: Al,Si distribution
; infrared spectroscopy
; Mercury
; MERTIS
; plagioclase feldspar
; space weathering
英文关键词: Autocorrelation
; Calcium compounds
; Chemical analysis
; Feldspar
; Infrared devices
; Infrared spectroscopy
; Remote sensing
; Silicon
; Autocorrelation functions
; Chemical compositions
; Electron microprobe analyzers
; Interpretation of data
; Mid-infrared spectroscopy
; Plagioclase feldspars
; Powder X ray diffraction
; Reflection spectra
; Aluminum metallography
; aluminum
; chemical composition
; infrared spectroscopy
; Mercury (planet)
; plagioclase
; remote sensing
; silicon
; solar system
; spatial distribution
英文摘要: We analyzed plagioclase feldspar samples that were well-characterized in terms of chemical composition as well as degree of Al,Si order in mid-infrared reflection spectra between 7 μm and 14 μm (1429 cm−1 and 714 cm−1). The chemical compositions were derived with an electron microprobe analyzer. To determine the degree of Al,Si order, powder X-ray diffraction methods were applied. For the interpretation of the infrared spectra, we used the wavelength of the Christiansen feature (CF) and the autocorrelation function for a specific wavelength region. The CF shifts from around 7.72 μm (1296 cm−1) in Na-richest samples to 8.10 μm (1234 cm−1) in the Ca-richest sample. Combining the CF position and the autocorrelation-derived value allowed to determine the degree of Al,Si order of the samples based on reflection spectra. The wavelength of the Transparency feature (TF) in the finest analyzed grain size fraction also depends on the chemical composition and the degree of Al,Si order. Our results are helpful for the interpretation of data returned by the MERTIS experiment onboard BepiColombo. The data help to distinguish between space weathering, shock effects, and ordering effects in plagioclase samples. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165642
Appears in Collections: 气候变化与战略
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作者单位: Institut für Planetologie, Westfälische Wilhelms-Universität (WWU) Münster, Münster, 48149, Germany; Deutsches Zentrum für Luft- und Raumfahrt (DLR), Rutherfordstr. 2, Berlin, 12489, Germany
Recommended Citation:
Reitze M.P.,Weber I.,Morlok A.,et al. Mid-infrared spectroscopy of crystalline plagioclase feldspar samples with various Al,Si order and implications for remote sensing of Mercury and other terrestrial Solar System objects[J]. Earth and Planetary Science Letters,2021-01-01,554