NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Reflectivity (visible and near IR), Moessbauer, static magnetic, and X ray diffraction properties of aluminum-substituted hematitesThe effect of substituting iron by aluminum in polymorphs of Fe2O3 and FeOOH on their reflectivity characteristics was investigated by comparing data on visible and NIR reflectivities and on static magnetic, XRD, and Moessbauer properties for a family of aluminum-substituted hematites alpha-(Fe,Al)2O3, with compositions where the values of the Al/(Al+Fe) ratio were up to 0.61. Samples were prepared by oxidation of magnetite, dehydroxylation of goethite, and direct precipitation. The analytical methods used for obtaining diffuse reflectivity spectra (350-2200 nm), Moessbauer spectra, and static magnetic data are those described by Morris et al. (1989).
Document ID
19920065122
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Morris, Richard V.
(NASA Johnson Space Center Houston, TX, United States)
Schulze, Darrell G.
(Purdue University West Lafayette, IN, United States)
Lauer, Howard V., Jr.
(Lockheed Engineering and Science Co. Houston, TX, United States)
Agresti, David G.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Shelfer, Tad D.
(Alabama, University Birmingham, United States)
Date Acquired
August 15, 2013
Publication Date
June 25, 1992
Publication Information
Publication: Journal of Geophysical Research
Volume: 97
Issue: E6, J
ISSN: 0148-0227
Subject Category
Lunar And Planetary Exploration
Accession Number
92A47746
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available