A carbonate-rich, hydrated, interplanetary dust particle Possible residue from protostellar clouds

Details A carbonate-rich, hydrated, interplanetary dust particle Possible residue from protostellar clouds A carbonate-rich, hydrated, interplanetary dust particle Possible residue from protostellar clouds

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sci...231.1544t&link_type=abstract

Science (ISSN 0036-8075), vol. 231, March 28, 1986, p. 1544-1546.

Computer Science

21

Carbonates, Hydration, Interplanetary Dust, Molecular Clouds, Protostars, Absorption Spectra, Chemical Composition, Electron Microscopy, Grain Size, Infrared Spectra, Interstellar Matter, Residues, Interplanetary Dust Particles, Carbonate, Hydration, Residue, Clouds, Tem, Samples, Extraterrestrial, Electron Microscopy, Composition, Iron, Spectra, Magnesium, Breunnerite, Siderite, Absorption, Infrared, Wavelengths, Photomicrographs, Mineralogy, Description, Electron Diffraction Methods, Spectroscopy, Eds, Sa

Scientific paper

Transmission electron microscopy of a hydrated interplanetary dust particle (IDP) indicates that it contains abundant magnesium-iron carbonates, primarily breunnerite and magnesian siderite. This IDP displays a strong absorption band at 6.8 micrometers in its infrared spectrum, similar to that in certain protostellar spectra. The carbonates probably account for the 6.8-micrometer band in the IDP spectrum, suggesting that carbonate also may occur in interstellar dust and be the source of the controversial 6.8-micrometer feature from the protostellar spectra.

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