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Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars

Geophysical Research Letters

By:
, , , , , , , ,
DOI: 10.1029/2007GL029894

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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.

Additional Publication Details

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
Year Published:
2007
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article