2024-03-28T10:50:03Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/479632022-01-21T12:47:53Zcom_10324_1158com_10324_931com_10324_894col_10324_1242
Raman semi-quantification on Mars: ExoMars RLS system as a tool to better comprehend the geological evolution of martian crust
Veneranda, Marco
Manrique Martínez, José Antonio
García Prieto, Clara
Sanz Arranz, Aurelio
Sáiz, Jesús
Lalla, Emmanuel Alexis
Konstantinidis, Menelaos
Moral Inza, Andoni Gaizka
Medina García, Jesús
Rull Pérez, Fernando
López Reyes, Guillermo Eduardo
Raman spectroscopy
Espectroscopia Raman
Chemometrics
Quimiometría
ExoMars mission
Misión ExoMars
Producción Científica
This work presents the latest chemometric tools developed by the RLS science team to optimize the scientific outcome of the Raman system onboard the ExoMars 2022 rover. Feldspar, pyroxene and olivine samples were first analyzed through the RLS ExoMars Simulator to determine the spectroscopic indicators to be used for a proper discrimination of mineral phases on Mars. Being the main components of Martian basaltic rocks, lepidocrocite, augite and forsterite were then used as mineral proxies to prepare binary mixtures. By emulating the operational constraints of the RLS, Raman datasets gathered from laboratory mixtures were used to build external calibration curves. Providing excellent coefficients of determination (R2 0.9942÷0.9997), binary curves were finally used to semi-quantify ternary mixtures of feldspar, pyroxene and olivine minerals. As Raman results are in good agreement with real concentration values, this work suggests the RLS could be effectively used to perform semi-quantitative mineralogical studies of the basaltic geological units found at Oxia Planum. As such, crucial information about the geological evolution of Martian Crust could be extrapolated. In light of the outstanding scientific impact this analytical method could have for the ExoMars mission, further methodological improvements to be discussed in a dedicated work are finally proposed.
Consejo Europeo de Investigación (grant 687302)
Ministerio de Economía, Industria y Competitividad (grants PID2019-107442RB-C31 and RDE2018-102600-T)
2021-08-23T08:01:28Z
2021-08-23T08:01:28Z
2021
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
https://doi.org/10.1016/j.icarus.2021.114542
Icarus, 2021, vol. 367, 114542
0019-1035
https://uvadoc.uva.es/handle/10324/47963
eng
https://www.sciencedirect.com/science/article/pii/S0019103521002153?via%3Dihub
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2021 The Authors
application/pdf
Elsevier