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Record Details

Record 43 of 2071
Metal silicate mixtures - Spectral properties and applications to asteroid taxonomy
Author and Affiliation:
Cloutis, Edward A.(Alberta Univ., Edmonton Alberta, Canada)
Smith, Dorian G. W.(Alberta Univ., Edmonton Alberta, Canada)
Lambert, Richard St. J.(Alberta, University, Edmonton, Canada)
Gaffey, Michael J.(Rensselaer Polytechnic, Institute, Troy, NY, United States)
Abstract: The reflectance spectra of combinations of olivine, orthopyroxene, and iron meteorite metal are experimentally studied, and the obtained variations in spectral properties are used to constrain the physical and chemical properties of the assemblages. The presence of metal most noticeably affects band area ratios, peak-to-peak and peak-to-minimum reflectance ratios, and band widths. Band width and band areas are useful for determining metal abundance in olivine and metal and orthopyroxene and metal assemblages, respectively. Mafic silicate grain size variations are best determined using band depth criteria. Band centers are most useful for determining mafic silicate composition. An application of these parameters to the S-class asteroid Flora is presented.
Publication Date: Jun 10, 1990
Document ID:
19900052851
(Acquired Nov 28, 1995)
Accession Number: 90A39906
Subject Category: INORGANIC AND PHYSICAL CHEMISTRY
Document Type: Journal Article
Publication Information: Journal of Geophysical Research (ISSN 0148-0227); 95; 8323-833
Publisher Information: United States
Contract/Grant/Task Num: NAGW-642
Financial Sponsor: NASA; United States
Organization Source: Alberta Univ.; Edmonton Alberta, Canada
Rensselaer Polytechnic Inst.; Troy, NY, United States
Description: 16p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTEROIDS; METALS; PLANETARY COMPOSITION; SILICATES; SPECTRAL REFLECTANCE; GRAIN SIZE; IRON METEORITES; OLIVINE; PYROXENES
Imprint And Other Notes: Journal of Geophysical Research (ISSN 0148-0227), vol. 95, June 10, 1990, p. 8323-8338. Research supported by the Geological Society of America and Sigma Xi - The Scientific Research Society.
Miscellaneous Notes: Research supported by the Geological Society of America and Sigma Xi - The Scientific Research Society
Availability Source: Other Sources
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