2026-03-09T23:50:35Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/462552025-02-11T18:18:16Zcom_10324_1158com_10324_931com_10324_894col_10324_1242

00925njm 22002777a 4500 dc Veneranda ., Marco author López Reyes, Guillermo Eduardo author Manrique Martínez, José Antonio author Sanz Arranz, José Aurelio author Lalla, Emmanuel Alexis author Konstantinidis, Menelaos author Moral Inza, Andoni Gaizka author Medina García, Jesús author Rull Pérez, Fernando author 2020 This work aims to evaluate whether the multi-point analysis the ExoMars Raman Laser Spectrometer (RLS) will perform on powdered samples could serve to classify ultramafc rocks on Mars. To do so, the RLS ExoMars Simulator was used to study terrestrial analogues of Martian peridotites and pyroxenites by applying the operational constraints of the Raman spectrometer onboard the Rosalind Franklin rover. Besides qualitative analysis, RLS-dedicated calibration curves have been built to estimate the relative content of olivine and pyroxenes in the samples. These semi-quantitative results, combined with a rough estimate of the concentration ratio between clino- and ortho-pyroxene mineral phases, were used to classify the terrestrial analogues. XRD data were fnally employed as reference to validate Raman results. As this preliminary work suggests, ultramafc rocks on Mars could be efectively classifed through the chemometric analysis of RLS data sets. After optimization, the proposed chemometric tools could be applied to the study of the volcanic geological areas detected at the ExoMars landing site (Oxia Planum), whose mineralogical composition and geological evolution have not been fully understood Scientifc Reports, Octubre 2020, vol. 10, n. 16954. p. 1-14 2045-2322 http://uvadoc.uva.es/handle/10324/46255 10.1038/s41598-020-73846-y 1 16954 14 Scientific Reports 10 2045-2322 Espectroscopia Raman, Quimiometría, Marte, Rocas ExoMars Raman Laser Spectrometer (RLS): development of chemometric tools to classify ultramafic igneous rocks on Mars