RT info:eu-repo/semantics/article
T1 Geochemical study of the Northwest Africa 6148 Martian meteorite and its terrestrial weathering processes
A1 Torre Fernández, Imanol
A1 Aramendia, Julene
A1 Gómez Nubla, Leticia
A1 Castro, Kepa
A1 Madariaga Mota, Juan Manuel
AB The number of studies of Mars geology through the geochemical analysis of Martian meteorites has been increasing in the lastyears because of the amount of information that can be obtained about the planet. In this study, a Martian meteorite, theNorthwest Africa 6148 nakhlite, has been analysed and characterised, as there were few studies about it. After analysing it byRaman spectroscopy and Scanning Electron Microscope–Energy Dispersive X-ray Spectroscopy coupled to the Structural andChemical Analyser interface, augite and olivine were identified as the main mineral phases of the sample. Moreover, using theRaman bands position, both minerals’ metal proportions were estimated. This methodology used in meteorite studies providesgood semi-quantitative results and can offer some advantages to other techniques. In addition, calcite was found, beingassociated with Earth weathering processes. Surprisingly, Co3O4 was detected in the matrix of the meteorite. This is the first timethat this oxide is observed in ameteorite. Itwas not possible to determine if it is an original compound fromMars or a product of aweathering process on Earth. However, whichever the case may be, solely the presence of this cobalt oxide represents a relevantfinding, as it could provide a deeper knowledge of theMartian geochemistry or the Earth weathering processes. Copyright © 2017John Wiley & Sons, Ltd.
PB Wiley
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/35255
UL http://uvadoc.uva.es/handle/10324/35255
LA eng
NO Journal of Raman Spectroscopy, 2017, vol 48, p. 1536–1543.
DS UVaDOC
RD 22-nov-2024