Synchrotron-Based FTIR Micro-spectroscopy of Martian Meteorites

Year 2018, Volume: 21 Issue: 4, 857 - 860, 01.12.2018

Mehmet Yesiltas

https://doi.org/10.2339/politeknik.385460

Abstract

Martian meteorites from SNC group were studied with
synchrotron-based FTIR spectroscopy with ~1 µm spatial resolution in the
mid-infrared region (4000-850 cm-1). Silicate region in EET A79001, ALH 84001,
and Nakhla present three prominent bands, while Chassigny has a different
spectral profile. The infrared spectra reveal that some of the grains contain
aliphatic type organic molecules as well as OH. According to the spatially
resolved distribution maps, these molecules appear to be heterogeneously distributed
in the samples. This points to complex parent body processes.

Keywords

Infrared spectroscopy, synchrotron-radiation, meteorites, martian, organics

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