![]() ![]() ![]() This study stresses the potential of Raman spectroscopy in the mineralogical characterization of meteorites on a very small scale and also the potential applications of Raman spectroscopy for use on landers or rovers on the surface of Mars or other planetary bodies. A comparison of the spectral parametersof these mineral phases observed in both meteorites was made and their possible origin as secondary minerals is discussed. In both cases haematite was not observed. Spectra of siderite, which appears associated with clinopyroxenes, are also reported in observed in Nakhla and goethite, lepidocrocite and magnetite in Vaca Muerta. Aragonite associated with calcite is reported for the first time in Vaca Muerta meteorite. Their spectral parameters show strong similarities. The presence of calcite in both meteorite specimens was noted its identification inside eucrite grains in the Vaca Muerta meteorite is particularly noteworthy. The compositions of pyroxenes and olivines were obtained using only this technique and correlation data between band parameters and the chemical composition of reference materials existing in the literature. The major and minor mineral components were identified from comparison with mineralogical standards and literature databases. A comprehensive micro-Raman spectroscopic analysis of the Nakhla and Vaca Muerta meteorites is reported.
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