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A deep-ultraviolet Raman and Fluorescence spectral library of 62 minerals for the SHERLOC instrument onboard Mars 2020

Hollis, Joseph Razzell and Abbey, William and Beegle, Luther W. and Bhartia, Rohit and Ehlmann, Bethany L. and Miura, Jasper and Monacelli, Brian and Moore, Kelsey and Nordman, Austin and Scheller, Eva and Uckert, Kyle and Wu, Yen-Hung (2021) A deep-ultraviolet Raman and Fluorescence spectral library of 62 minerals for the SHERLOC instrument onboard Mars 2020. Planetary and Space Science, 209 . Art. No. 105356. ISSN 0032-0633. doi:10.1016/j.pss.2021.105356.

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We report deep-ultraviolet (DUV) Raman spectra as measured by a SHERLOC analog instrument (248.6 nm excitation) for 92 samples representing 62 distinct minerals, including borates, carbonates, sulfates, phosphates, halides, metal oxides & hydroxides, silicates & phyllosilicates. We found that DUV Raman is capable of detecting the majority of these minerals, with major mineral peaks occurring at ∼500, ∼850, 950–1200, and ∼3600 cm⁻¹, and that detection thresholds will be better for the SHERLOC flight instrument than the analog used in this study. Minerals can be classified (e.g., sulfate vs carbonate, or pyroxene vs olivine) based on the number of major peaks and their general positions. Identification of specific mineral phases is possible based on precise Raman peak positions, provided the difference between spectrally similar minerals is at least 10 cm⁻¹ to overcome the estimated instrumental uncertainty of ±5 cm⁻¹ for all peak positions reported in this study. A number of silicate minerals did not produce measurable Raman signal, and iron-rich minerals tend to be more difficult to detect due to significant UV absorption. Many Mars-relevant minerals expected to occur in Jezero crater should be detectable to SHERLOC even during short-exposure survey scans. This library will help inform the detection and identification of mineral phases in Martian samples using the SHERLOC instrument onboard the Mars 2020 Perseverance rover.

Item Type:Article
Related URLs:
URLURL TypeDescription
Hollis, Joseph Razzell0000-0002-6239-694X
Beegle, Luther W.0000-0002-4944-4353
Bhartia, Rohit0000-0002-1434-7481
Ehlmann, Bethany L.0000-0002-2745-3240
Miura, Jasper0000-0002-2672-2605
Monacelli, Brian0000-0002-6249-2296
Nordman, Austin0000-0003-4370-2021
Scheller, Eva0000-0002-9981-5802
Uckert, Kyle0000-0002-0859-5526
Wu, Yen-Hung0000-0002-9532-5072
Additional Information:© 2021 The Authors. Published by Elsevier Ltd. Under an Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0). Received 18 May 2021, Revised 16 August 2021, Accepted 29 September 2021, Available online 20 October 2021. The research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004). Government sponsorship acknowledged. © 2021, all rights reserved. We would like to thank Sandy Asher, Adrian Brown, Ken Edgett, Svetlana Shkolyar, Andrew Steele, and Anastasia Yanchilina for helpful discussions and comments. Author statement: Authors’ Statement for “A Deep-Ultraviolet Raman and Fluorescence Spectral Library of 62 Minerals for the SHERLOC instrument onboard Mars 2020” The authors declare that this manuscript is original, has not been published before and is not currently being considered for publication elsewhere. We confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed. We further confirm that the order of authors listed in the manuscript has been approved by all of us. We understand that the Corresponding Author is the sole contact for the Editorial process. He/she is responsible for communicating with the other authors about progress, submissions of revisions and final approval of proofs. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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Subject Keywords:Deep-ultraviolet Raman spectroscopy; Mars 2020; Mars; Mineralogy; SHERLOC
Record Number:CaltechAUTHORS:20211116-203549126
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Official Citation:Joseph Razzell Hollis, William Abbey, Luther W. Beegle, Rohit Bhartia, Bethany L. Ehlmann, Jasper Miura, Brian Monacelli, Kelsey Moore, Austin Nordman, Eva Scheller, Kyle Uckert, Yen-Hung Wu, A deep-ultraviolet Raman and Fluorescence spectral library of 62 minerals for the SHERLOC instrument onboard Mars 2020, Planetary and Space Science, Volume 209, 2021, 105356, ISSN 0032-0633,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111908
Deposited By: Tony Diaz
Deposited On:16 Nov 2021 22:12
Last Modified:16 Nov 2021 22:12

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