Iron mineralogy and aqueous alteration from Husband Hill through Home Plate at Gusev Crater, Mars: Results from the Mossbauer instrument on the Spirit Mars Exploration Rover

dc.contributor.authorMorris, R. V.
dc.contributor.authorKlingelhöfer, Göstar
dc.contributor.authorSchroeder, C.
dc.contributor.authorFleischer, I.
dc.contributor.authorMing, D. W.
dc.contributor.authorYen, A. S.
dc.contributor.authorGellert, R.
dc.contributor.authorArvidson, Raymond E.
dc.contributor.authorRodionov, D. S.
dc.contributor.authorCrumpler, Larry S.
dc.contributor.authorClark, Benton C.
dc.contributor.authorCohen, B. A.
dc.contributor.authorMcCoy, Timothy J.
dc.contributor.authorMittlefehldt, D. W.
dc.contributor.authorSchmidt, M. E.
dc.contributor.authorde Souza, P. A., Jr.
dc.contributor.authorSquyres, Steven W.
dc.date.accessioned2013-04-22T18:26:11Z
dc.date.available2013-04-22T18:26:11Z
dc.date.issued2008
dc.description.abstractSpirit's Mossbauer (MB) instrument determined the Fe mineralogy and oxidation state of 71 rocks and 43 soils during its exploration of the Gusev plains and the Columbia Hills (West Spur, Husband Hill, Haskin Ridge, northern Inner Basin, and Home Plate) on Mars. The plains are predominantly float rocks and soil derived from olivine basalts. Outcrops at West Spur and on Husband Hill have experienced pervasive aqueous alteration as indicated by the presence of goethite. Olivine-rich outcrops in a possible mafic/ultramafic horizon are present on Haskin Ridge. Relatively unaltered basalt and olivine basalt float rocks occur at isolated locations throughout the Columbia Hills. Basalt and olivine basalt outcrops are found at and near Home Plate, a putative hydrovolcanic structure. At least three pyroxene compositions are indicated by MB data. MB spectra of outcrops Barnhill and Torquas resemble palagonitic material and thus possible supergene aqueous alteration. Deposits of Fe3+-sulfate soil, located at Paso Robles, Arad, and Tyrone, are likely products of acid sulfate fumarolic and/or hydrothermal activity, possibly in connection with Home Plate volcanism. Hematite-rich outcrops between Home Plate and Tyrone (e. g., Montalva) may also be products of this aqueous activity. Low water-to-rock ratios (isochemical alteration) are implied during palagonite, goethite, and hematite formation because bulk chemical compositions are basaltic (SO3-free basis). High water-to-rock ratios (leaching) under acid sulfate conditions are implied for the high-SiO2 rock and soil in Eastern Valley and the float rock FuzzySmith, which has possible pyrite/marcasite as a hydrothermal alteration product.
dc.format.extentE12S42
dc.identifier2169-9097
dc.identifier.citationMorris, R. V., Klingelhöfer, Göstar, Schroeder, C., Fleischer, I., Ming, D. W., Yen, A. S., Gellert, R., Arvidson, Raymond E., Rodionov, D. S., Crumpler, Larry S., Clark, Benton C., Cohen, B. A., McCoy, Timothy J., Mittlefehldt, D. W., Schmidt, M. E., de Souza, P. A., Jr., and Squyres, Steven W. 2008. "<a href="https://repository.si.edu/handle/10088/20543">Iron mineralogy and aqueous alteration from Husband Hill through Home Plate at Gusev Crater, Mars: Results from the Mossbauer instrument on the Spirit Mars Exploration Rover</a>." <em>Journal of Geophysical Research. E. Planets</em>, 113, (E12) E12S42. <a href="https://doi.org/10.1029/2008JE003201">https://doi.org/10.1029/2008JE003201</a>.
dc.identifier.issn2169-9097
dc.identifier.urihttp://hdl.handle.net/10088/20543
dc.publisherAMER GEOPHYSICAL UNION
dc.relation.ispartofJournal of Geophysical Research. E. Planets 113 (E12)
dc.titleIron mineralogy and aqueous alteration from Husband Hill through Home Plate at Gusev Crater, Mars: Results from the Mossbauer instrument on the Spirit Mars Exploration Rover
dc.typearticle
sro.description.unitNMNH
sro.description.unitNH-Mineral Sciences
sro.identifier.doi10.1029/2008JE003201
sro.identifier.itemID77151
sro.identifier.refworksID62654
sro.identifier.urlhttps://repository.si.edu/handle/10088/20543
sro.publicationPlaceWASHINGTON; 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA

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