Photometric phase functions of common geologic minerals and applications to quantitative analysis of mineral mixture reflectance spectra

Details Photometric phase functions of common geologic minerals and applications to quantitative analysis of mineral mixture reflectance spectra Photometric phase functions of common geologic minerals and applications to quantitative analysis of mineral mixture reflectance spectra

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9413619m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Oct. 10, 1989, p. 13619-13634.

Physics

97

Bidirectional Reflectance, Minerals, Planetary Geology, Spectral Reflectance, Light Scattering, Particle Size Distribution, Physical Properties, Planetary Surfaces, Quantitative Analysis

Scientific paper

The mass fractional abundance of components in intimately mixed, particulate surfaces is calculated from laboratory reflectance spectra using Hapke's (1981) model for bidirectional reflectance. It is found that a simplified version of the model is accurate to within 7 percent for mixtures not containing low albedo components. The model is not appropriate for mixtures with very low and high albedo components. Consideration is given to the possible improvement of the method's accuracy by using an empirical single-particle phase function to describe the scattering characteristics of all minerals, or by solving for the single-particle phase function of the minerals involved exactly using extensive bidirectional reflectance measurements and Hapke's equations for bidirectional reflectance. Also, the results are used to examine the general scattering behavior of particulate mineral surfaces.

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