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Observational evidence of crystalline iron oxides on Mars (1990)

Owensby, Pamela D. ; Bell, James F., III ; Mccord, Thomas B.

In: Other Sources

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Publication Date: 2019-07-12

Description: A series of new spectral observations of Mars was obtained at Mauna Kea Observatory in the 0.4-1.0-micron wavelength range during the extremely favorable 1988 opposition, which yielded new spectral reflectance and relative reflectance data for a number of distinct spots on the Martian surface at 500-600 km spatial resolution. The new spectra revealed absorptions at 0.62-0.72 micron and at 0.81-0.94 micron, both seen clearly for the first time. These absorption features are interpreted as Fe(3+) electronic transition bands that indicate the presence of crystalline ferric oxide or hydroxide minerals on the Martian surface.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Journal of Geophysical Research (ISSN 0148-0227); 95; 14447-14

Format: text

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