TY - JOUR
T1 - Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars
AU - Johnson, J. R.
AU - Bell, III F.
AU - Cloutis, E.
AU - Staid, M.
AU - Farrand, W. H.
AU - McCoy, T.
AU - Rice, M.
AU - Wang, Alian
AU - Yen, Albert
PY - 2007/7/16
Y1 - 2007/7/16
N2 - 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)].
AB - 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)].
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U2 - 10.1029/2007GL029894
DO - 10.1029/2007GL029894
M3 - Article
AN - SCOPUS:34548659797
SN - 0094-8276
VL - 34
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 13
M1 - L13202
ER -