Deconvolution of lunar olivine reflectance spectra: Implications for remote compositional assessment

Lunar olivines typically contain inclusions of Cr–spinel (chromite) that influence their measured optical properties. These altered optical properties complicate modeled predictions of olivine composition from reflectance spectra. Approaches developed for inclusion-free terrestrial olivine spectra m...

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Bibliographic Details
Published in:Icarus (New York, N.Y. 1962) N.Y. 1962), 2010-11, Vol.210 (1), p.8-13
Main Authors: Isaacson, Peter J., Pieters, Carlé M.
Format: Article
Language:English
Subjects:
Assessments
Astronomy
Data reduction techniques
Earth, ocean, space
Exact sciences and technology
Inclusions
Mathematical models
Mineralogy
Moon, Surface
Olivine
Optical properties
Reflectance
Reflectivity
Solar system
Spectra
Spectroscopy
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Summary:Lunar olivines typically contain inclusions of Cr–spinel (chromite) that influence their measured optical properties. These altered optical properties complicate modeled predictions of olivine composition from reflectance spectra. Approaches developed for inclusion-free terrestrial olivine spectra must be modified to be applied to chromite-bearing lunar olivine spectra. We present a revised approach for predicting the compositions of chromite-bearing lunar olivines using the Modified Gaussian Model (MGM). The results of this revised approach for chromite-bearing lunar olivines are consistent with previous results for terrestrial olivine reflectance spectra, and successfully predict the olivine’s composition. These results are an important step in compositional assessment of remotely-sensed olivine spectra, and are essential to ongoing investigations of that topic. Our results are based on a limited set of available lunar olivine separates, and would be strengthened by the inclusion of additional compositions.
ISSN:0019-1035
1090-2643
DOI:10.1016/j.icarus.2010.06.004