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Spectral reflectance properties of carbon-bearing materialsThe 0.3-2.6 micrometers spectral reflectance properties of carbon polymorphs (graphite, carbon black, diamond), carbides (silicon carbide, cementite), and macromolecular organic-bearing materials (coal, coal tar extract, oil sand, oil shale) are found to vary from sample to sample and among groups. The carbon polymorphs are readily distinguishable on the basis of their visible-near infrared spectral slopes and shapes. The spectra of macromolecular organic-bearing materials show increases in reflectance toward longer wavelengths, exceeding the reflectance rise of more carbon-rich materials. Reflectance spectra of carbonaceous materials are affected by the crystal structure, composition, and degree of order/disorder of the samples. The characteristic spectral properties can potentially be exploited to identify individual carbonaceous grains in meteorites (as separates or in situ) or to conduct remote sensing geothermometry and identification of carbonaceous phases on asteroids.
Document ID
19950030479
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Cloutis, Edward A.
(ER Georesearch Ltd. Calgary, Alberta, Canada)
Gaffey, Michael J.
(Rensselaer Polytechnic Inst. Troy, NY, United States)
Moslow, Thomas F.
(Univ. of Alberta Edmonton, Alberta, Canada)
Date Acquired
August 16, 2013
Publication Date
February 1, 1994
Publication Information
Publication: ICARUS
Volume: 107
Issue: 2
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
95A62078
Funding Number(s)
CONTRACT_GRANT: NAGW-642
Distribution Limits
Public
Copyright
Other

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