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Synchrotron-based Infrared Microspectroscopy as a Useful Tool to Study Hydration States of Meteorite ConstituentsThe meteorites Dho 225 and Dho 735 were recently found in Oman. Studies of their mineralogical and chemical composition suggest that these unusual meteorites are thermally metamorphosed CM2 chondrites [1,2,3]. Similar to Antarctic metamorphosed carbonaceous chondrites, the Dho 225 and Dho 735 are enriched in heavy oxygen compared to normal CMs [1,2]. However, IR studies indicating dehydration of matrix phyllosilicates are needed to confirm that the two new meteorites from Oman are thermally metamorphosed [4]. Synchrotron-based IR microspectroscopy is a new promising technique which allows the acquisition of IR spectra from extremely small samples. Here we demonstrate that this non-destructive technique is a useful tool to study hydration states of carbonaceous chondrites in situ. In addition, we acquired reflectance spectra of bulk powders of the Dho 225 and Dho 735 in the range of 0.3-50 microns.
Document ID
20050174593
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Moroz, L. V. (Deutsche Forschungsanstalt fuer Luft- und Raumfahrt Berlin, Germany)
Schmidt, M. (BESSY G.m.b.H. Berlin, Germany)
Schade, U. (BESSY G.m.b.H. Berlin, Germany)
Hiroi, T. (Brown Univ. Providence, RI, United States)
Ivanova, M. A. (Academy of Sciences (USSR) Moscow, USSR)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Publication Information
Publication: Lunar and Planetary Science XXXVI, Part 13
Subject Category
Geophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-13609
Distribution Limits
Public
Copyright
Public Use Permitted.

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