Abstract
Extinction measurements were made for some silicate and iron-oxide mineral grains in mid- and far-infrared region. For far-infrared region, high temperature magnesium silicates such as olivine and pyroxenes show the absorption spectra of steep dependence as λ−3 (λ being the wavelength) with some peak structure, but the spectrum of magnetite shows λ−1 dependence.
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Koike, C., Hasegawa, H., Asada, N. et al. The extinction coefficients in mid- and farinfrared of silicate and iron-oxide minerals of interest for astronomical observations. Astrophys Space Sci 79, 77–85 (1981). https://doi.org/10.1007/BF00655906
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DOI: https://doi.org/10.1007/BF00655906