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Article: Mars-rover cameras evaluation of laboratory spectra of Fe-bearing Mars analog samples

TitleMars-rover cameras evaluation of laboratory spectra of Fe-bearing Mars analog samples
Authors
KeywordsFe-bearing minerals
Mars
Martian rovers
Mineralogy
Visible spectroscopy
Issue Date2022
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/icarus
Citation
Icarus, 2022, v. 371, p. article no. 114704 How to Cite?
AbstractThe cameras on the Pathfinder probe (Imager for Pathfinder) and the rovers Spirit and Opportunity (Panoramic Camera), Curiosity (Mast Camera) and Perseverance (Mast Camera-Z) produce visible-range spectra of limited wavelength resolution but of great target resolution which allows mineralogical analysis of selected areas within martian rocks. Laboratory spectra of relevant specimens were transformed into the spectra corresponding to each of the above cameras to increase our capability to interpret martian spectral data collected in-situ. The focus was on finding spectral features that can be detected by the cameras on Mars and are diagnostic of specific minerals. The samples are a collection of (1) Fe/Mg-phyllosilicates from submarine hydrothermal sites and (2) of rocks from acid alteration environments containing goethite, hematite, jarosite and Fe-bearing chlorite as these minerals are detectable in the extended visible range. Among all the samples, interstratified glauconite-nontronite has the most unique spectral features and should be easily detectable with the rover cameras. The spectral features of talc from Fe-bearing interstratified specimens are described. These data are especially relevant as glauconite and talc have been proposed to be fairly abundant on Mars and their detections are suggested from remote-sensing near-IR data. Several indices are proposed to assess Fe content on the investigated samples as well as mineral concentration of goethite and hematite. Among these indices, the normalized spectral slope in the range 420–600 nm increases with total Fe content for all samples, whether phyllosilicates, oxides or sulphates (R2 = 0.7–0.8). For pure phyllosilicates, the slope from 600 to 1010 nm decreases with increasing octahedral Fe (R2 = 0.75). An index for goethite produced excellent results assessing goethite concentration (R2 = 0.84). Of all cameras, Mast Camera reproduces the spectra with lowest fidelity and generates the poorest correlations between indices and tested variables. The other three cameras perform similarly.
Persistent Identifierhttp://hdl.handle.net/10722/306385
ISSN
2023 Impact Factor: 2.5
2023 SCImago Journal Rankings: 1.061
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCuadros, J-
dc.contributor.authorMichalski, JR-
dc.contributor.authorBishop, JL-
dc.contributor.authorMavris, C-
dc.contributor.authorFiore, S-
dc.contributor.authorDekov, V-
dc.date.accessioned2021-10-20T10:22:50Z-
dc.date.available2021-10-20T10:22:50Z-
dc.date.issued2022-
dc.identifier.citationIcarus, 2022, v. 371, p. article no. 114704-
dc.identifier.issn0019-1035-
dc.identifier.urihttp://hdl.handle.net/10722/306385-
dc.description.abstractThe cameras on the Pathfinder probe (Imager for Pathfinder) and the rovers Spirit and Opportunity (Panoramic Camera), Curiosity (Mast Camera) and Perseverance (Mast Camera-Z) produce visible-range spectra of limited wavelength resolution but of great target resolution which allows mineralogical analysis of selected areas within martian rocks. Laboratory spectra of relevant specimens were transformed into the spectra corresponding to each of the above cameras to increase our capability to interpret martian spectral data collected in-situ. The focus was on finding spectral features that can be detected by the cameras on Mars and are diagnostic of specific minerals. The samples are a collection of (1) Fe/Mg-phyllosilicates from submarine hydrothermal sites and (2) of rocks from acid alteration environments containing goethite, hematite, jarosite and Fe-bearing chlorite as these minerals are detectable in the extended visible range. Among all the samples, interstratified glauconite-nontronite has the most unique spectral features and should be easily detectable with the rover cameras. The spectral features of talc from Fe-bearing interstratified specimens are described. These data are especially relevant as glauconite and talc have been proposed to be fairly abundant on Mars and their detections are suggested from remote-sensing near-IR data. Several indices are proposed to assess Fe content on the investigated samples as well as mineral concentration of goethite and hematite. Among these indices, the normalized spectral slope in the range 420–600 nm increases with total Fe content for all samples, whether phyllosilicates, oxides or sulphates (R2 = 0.7–0.8). For pure phyllosilicates, the slope from 600 to 1010 nm decreases with increasing octahedral Fe (R2 = 0.75). An index for goethite produced excellent results assessing goethite concentration (R2 = 0.84). Of all cameras, Mast Camera reproduces the spectra with lowest fidelity and generates the poorest correlations between indices and tested variables. The other three cameras perform similarly.-
dc.languageeng-
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/icarus-
dc.relation.ispartofIcarus-
dc.subjectFe-bearing minerals-
dc.subjectMars-
dc.subjectMartian rovers-
dc.subjectMineralogy-
dc.subjectVisible spectroscopy-
dc.titleMars-rover cameras evaluation of laboratory spectra of Fe-bearing Mars analog samples-
dc.typeArticle-
dc.identifier.emailMichalski, JR: jmichal@hku.hk-
dc.identifier.authorityMichalski, JR=rp02225-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.icarus.2021.114704-
dc.identifier.scopuseid_2-s2.0-85115371354-
dc.identifier.hkuros327245-
dc.identifier.volume371-
dc.identifier.spagearticle no. 114704-
dc.identifier.epagearticle no. 114704-
dc.identifier.isiWOS:000703964300017-
dc.publisher.placeUnited States-

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