Raman, FTIR and XRD study of Icelandic tephra minerals: implications for Mars

Emily J. Bathgate; Helen E. Maynard-Casely; Graziella Caprarelli; Linda Xiao; Barbara Stuart; Kate T. Smith; Ross Pogson

doi:10.1002/jrs.4694

Raman, FTIR and XRD study of Icelandic tephra minerals: implications for Mars

Emily J. Bathgate^*, Helen E. Maynard-Casely, Graziella Caprarelli, Linda Xiao, Barbara Stuart, Kate T. Smith, Ross Pogson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Essential to the success of proposed planetary Raman spectroscopy missions will be the preparation of comprehensive libraries of spectra and a greater understanding of the current limitations of Raman spectroscopy. Seven samples of Icelandic tephra were analysed using X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared (FTIR) as an analogue for Martian rocks. The results from these three spectroscopic techniques were compared with the success of mineral identification of each method differing. Some minerals such as ilmenite and flouroapatite were identified using XRD and not found in the Raman spectra. Olivine, hematite and anatase were detected by Raman spectroscopy but were not observed in the XRD patterns. The FTIR results gave essential information on the presence of H₂O in the samples. The impact of fluorescence on Raman spectra of some minerals is still a major concern as this is the most likely reason for some of the diagnostic mineral peaks not showing in the Raman spectra.

Original language	English
Pages (from-to)	846-855
Number of pages	10
Journal	Journal of Raman Spectroscopy
Volume	46
Issue number	10
DOIs	https://doi.org/10.1002/jrs.4694
Publication status	Published - 1 Oct 2015
Externally published	Yes

Keywords

Iceland
Mars
Raman spectroscopy
volcanic minerals
XRD

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title = "Raman, FTIR and XRD study of Icelandic tephra minerals: implications for Mars",

abstract = "Essential to the success of proposed planetary Raman spectroscopy missions will be the preparation of comprehensive libraries of spectra and a greater understanding of the current limitations of Raman spectroscopy. Seven samples of Icelandic tephra were analysed using X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared (FTIR) as an analogue for Martian rocks. The results from these three spectroscopic techniques were compared with the success of mineral identification of each method differing. Some minerals such as ilmenite and flouroapatite were identified using XRD and not found in the Raman spectra. Olivine, hematite and anatase were detected by Raman spectroscopy but were not observed in the XRD patterns. The FTIR results gave essential information on the presence of H2O in the samples. The impact of fluorescence on Raman spectra of some minerals is still a major concern as this is the most likely reason for some of the diagnostic mineral peaks not showing in the Raman spectra.",

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T2 - implications for Mars

AU - Bathgate, Emily J.

AU - Maynard-Casely, Helen E.

AU - Caprarelli, Graziella

AU - Xiao, Linda

AU - Stuart, Barbara

AU - Smith, Kate T.

AU - Pogson, Ross

PY - 2015/10/1

Y1 - 2015/10/1

N2 - Essential to the success of proposed planetary Raman spectroscopy missions will be the preparation of comprehensive libraries of spectra and a greater understanding of the current limitations of Raman spectroscopy. Seven samples of Icelandic tephra were analysed using X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared (FTIR) as an analogue for Martian rocks. The results from these three spectroscopic techniques were compared with the success of mineral identification of each method differing. Some minerals such as ilmenite and flouroapatite were identified using XRD and not found in the Raman spectra. Olivine, hematite and anatase were detected by Raman spectroscopy but were not observed in the XRD patterns. The FTIR results gave essential information on the presence of H2O in the samples. The impact of fluorescence on Raman spectra of some minerals is still a major concern as this is the most likely reason for some of the diagnostic mineral peaks not showing in the Raman spectra.

AB - Essential to the success of proposed planetary Raman spectroscopy missions will be the preparation of comprehensive libraries of spectra and a greater understanding of the current limitations of Raman spectroscopy. Seven samples of Icelandic tephra were analysed using X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared (FTIR) as an analogue for Martian rocks. The results from these three spectroscopic techniques were compared with the success of mineral identification of each method differing. Some minerals such as ilmenite and flouroapatite were identified using XRD and not found in the Raman spectra. Olivine, hematite and anatase were detected by Raman spectroscopy but were not observed in the XRD patterns. The FTIR results gave essential information on the presence of H2O in the samples. The impact of fluorescence on Raman spectra of some minerals is still a major concern as this is the most likely reason for some of the diagnostic mineral peaks not showing in the Raman spectra.

KW - Iceland

KW - Mars

KW - Raman spectroscopy

KW - volcanic minerals

KW - XRD

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ER -

Raman, FTIR and XRD study of Icelandic tephra minerals: implications for Mars

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Keywords

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