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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Field-portable Mössbauer spectroscopy on Earth, the Moon, Mars, and beyond
Author(s): Schröder, Christian
Klingelhoefer, Goestar
Morris, Richard Van
Bernhardt, Bodo
Blumers, Mathias
Fleischer, Iris
Rodionov, Daniel S
Girones-Lopez, Jordi
de Souza Jr, Paulo A
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Keywords: Fe (bio)geochemistry
in-situ resource utilisation (ISRU)
Issue Date: May-2011
Date Deposited: 24-Oct-2013
Citation: Schröder C, Klingelhoefer G, Morris RV, Bernhardt B, Blumers M, Fleischer I, Rodionov DS, Girones-Lopez J & de Souza Jr PA (2011) Field-portable Mössbauer spectroscopy on Earth, the Moon, Mars, and beyond. Geochemistry: Exploration, Environment, Analysis, 11 (2), pp. 129-143.
Abstract: Iron occurs naturally as Fe2+, Fe3+, and, to a lesser extent, as Fe0. Many fundamental (bio)geochemical processes are based on redox cycling between these oxidation states. Mössbauer spectroscopy provides quantitative information about the distribution of Fe among its oxidation states, identification of Fe-bearing phases, and relative distribution of Fe among those phases. Portable, miniaturised Mössbauer spectrometers were developed for NASA’s Mars Exploration Rovers (in operation since 2004) and provide a means for non-destructive, in-situ field investigations. On Mars, these instruments provided evidence for aqueous activity with implications for habitability, were applied in geological mapping of the landing sites, and helped to identify meteorites, for example. On Earth, they were used in field studies of green rust, the identification of air pollution sources, or the study of archaeological artefacts. Their application to in-situ resource utilisation (ISRU) on the Moon has been demonstrated in a recent NASA field test of hardware for oxygen production. A new detector system in an advanced version of these instruments is based on Si Drift Detectors and permits the simultaneous acquisition of X-ray fluorescence spectra to determine elemental compositions.
DOI Link: 10.1144/1467-7873/09-IAGS-018
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