Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars
Geophysical Research Letters
By: J. R. Johnson, J.F. Bell, E. Cloutis, M. Staid, W. H. Farrand, T. McCoy, M. Rice, A. Wang, and A. Yen
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Abstract
The Mars Exploration Rover (MER) Spirit excavated sulfur-rich soils exhibiting high albedo and relatively white to yellow colors at three main locations on and south of Husband Hill in Gusev crater, Mars. The multispectral visible/near-infrared properties of these disturbed soils revealed by the Pancam stereo color camera vary appreciably over small spatial scales, but exhibit spectral features suggestive of ferric sulfates. Spectral mixture models constrain the mineralogy of these soils to include ferric sulfates in various states of hydration, such as ferricopiapite [Fe2/32+Fe43+ (SO4)6(OH)2??20(H2O)], hydronium jarosite [(H3O)Fe33+ (SO4)2(OH)6], fibroferrite [Fe3+(SO4)(OH)??5(H2O)], rhomboclase [HFe3+(SO4)2??4 (H2O)], and paracoquimbite [Fe23+ (SO4)3.9(H2O)]. Copyright 2007 by the American Geophysical Union.
Suggested Citation
Johnson, J.R., Bell, J., Cloutis, E., Staid, M., Farrand, W.H., McCoy, T., Rice, M., Wang, A., and Yen, A., 2007, Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars: Geophysical Research Letters, v. 34, no. 13, https://doi.org/10.1029/2007GL029894.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2007GL029894 |
| Volume | 34 |
| Issue | 13 |
| Publication Date | July 06, 2007 |
| Year Published | 2007 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geophysical Research Letters |