Computer Science
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mmws.work...13f&link_type=abstract
Workshop on the Issue Martian Meteorites: Where do we Stand and Where are we Going?, p. 13
Computer Science
Aliphatic Hydrocarbons, Organic Compounds, Snc Meteorites, Carbonates, Infrared Spectroscopy, X Ray Absorption, Electron Microscopes
Scientific paper
We previously reported scanning transmission X-ray microscope (STXM) C mapping, X-ray absorption near-edge structure (XANES) spectroscopy, and Fourier transform infrared (FTIR) spectroscopy on a carbonate globule and opaque "rim material" from the ALH 84001 meteorite. The globule was consistent with the material described elsewhere. However, the opaque "rim material" was dominated by feldspathic glass, appearing opaque mainly because of the presence of chromites, and containing only minor amounts of the carbonate, magnetite, and sulfide that are major components in the rims. Percent-level organic Carbon was associated with both the carbonate globule and the opaque material. The C-XANES spectrum of the organic compound in the globule was different from that in the opaque material. FTIR spectroscopy indicated the presence of aliphatic hydrocarbons, having different ratios of C-H, to C-H3 groups, in the two samples.
Flynn George James
Jacobsen Chris
Keller Lindsay P.
Wirick Sue
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