Spectral Properties of Hydrated Poorly Crystalline Materials for Spectral Analysis of the Moon and MarsVisible/near-infrared (VNIR) reflectance spectra of both Mars [1] and the Moon [2] include hydration bands that vary across the planet and are not well explained in some cases. Poorly crystalline phases have been found at ~30-70 wt.% by CheMin in Gale crater, Mars in all samples measured to date [3]. Here we report on VNIR reflectance spectra of a large collection of amorphous and poorly crystalline materials. These include opal, allophane, imogolite, iron hydroxides/ oxyhydroxides (FeOx), and several synthetic materials containing Si, Al and/or Fe. All of these contain hydration bands due to water and OH that can be used to identify these materials remotely on planetary bodies.
Document ID
20190001839
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Bishop, J. L. (Search for Extraterrestrial Intelligence Inst. Mountain View, CA, United States)
Hinman, N. W. (Montana Univ. Missoula, MT, United States)
Danielsen, J. M. (Search for Extraterrestrial Intelligence Inst. Mountain View, CA, United States)
Baker, L. L. (Idaho Univ. Moscow, ID, United States)
Jeute, T. J. (Idaho Univ. Moscow, ID, United States)
Abidin, Z. (Bogor Agricultural Univ. Bogor, Indonesia)
Rampe, Elizabeth B. (NASA Johnson Space Center Houston, TX, United States)