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Your search keyword '"Rodionov, D. S."' showing total 6 results
Start Over Author "Rodionov, D. S." Topic mars
6 results on '"Rodionov, D. S."'

1. Jarosite and hematite at Meridiani Planum from Opportunity's Mossbauer Spectrometer.

Author

Klingelhöfer G, Morris RV, Bernhardt B, Schröder C, Rodionov DS, de Souza PA Jr, Yen A, Gellert R, Evlanov EN, Zubkov B, Foh J, Bonnes U, Kankeleit E, Gütlich P, Ming DW, Renz F, Wdowiak T, Squyres SW, and Arvidson RE

Subjects
Extraterrestrial Environment, Geologic Sediments, Iron Compounds, Magnesium Compounds, Minerals, Silicates, Spacecraft, Spectroscopy, Mossbauer, Water, Ferric Compounds, Mars, Sulfates
Abstract

Mossbauer spectra measured by the Opportunity rover revealed four mineralogical components in Meridiani Planum at Eagle crater: jarosite- and hematite-rich outcrop, hematite-rich soil, olivine-bearing basaltic soil, and a pyroxene-bearing basaltic rock (Bounce rock). Spherules, interpreted to be concretions, are hematite-rich and dispersed throughout the outcrop. Hematitic soils both within and outside Eagle crater are dominated by spherules and their fragments. Olivine-bearing basaltic soil is present throughout the region. Bounce rock is probably an impact erratic. Because jarosite is a hydroxide sulfate mineral, its presence at Meridiani Planum is mineralogical evidence for aqueous processes on Mars, probably under acid-sulfate conditions.

Published
2004
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2. Mineralogy at Gusev Crater from the Mössbauer spectrometer on the Spirit Rover.

Author

Morris RV, Klingelhöfer G, Bernhardt B, Schröder C, Rodionov DS, De Souza PA Jr, Yen A, Gellert R, Evlanov EN, Foh J, Kankeleit E, Gütlich P, Ming DW, Renz F, Wdowiak T, Squyres SW, and Arvidson RE

Subjects
Extraterrestrial Environment, Ferric Compounds, Ferrosoferric Oxide, Geologic Sediments, Iron, Magnesium Compounds, Oxides, Silicates, Spectroscopy, Mossbauer, Iron Compounds, Mars, Minerals
Abstract

Mössbauer spectra measured on Mars by the Spirit rover during the primary mission are characterized by two ferrous iron doublets (olivine and probably pyroxene) and a ferric iron doublet (tentatively associated to nanophase ferric iron oxide). Two sextets resulting from nonstoichiometric magnetite are also present, except for a coating on the rock Mazatzal, where a hematite-like sextet is present. Greater proportions of ferric-bearing phases are associated with undisturbed soils and rock surfaces as compared to fresh rock surfaces exposed by grinding. The ubiquitous presence of olivine in soil suggests that physical rather than chemical weathering processes currently dominate at Gusev crater.

Published
2004
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5. Dust Complex for Studying the Dust Particle Dynamics in the Near-Surface Atmosphere of Mars

Author

Zakharov, A. V., Dolnikov, G. G., Kuznetsov, I. A., Lyash, A. N., Esposito, F., Molfese, C., Rodríguez, I. Arruego, Seran, E., Godefroy, M., Dubov, A. E., Dokuchaev, I. V., Knyazev, M. G., Bondarenko, A. V., Gotlib, V. M., Karedin, V. N., Shashkova, I. A., Abdelaal, M. E., Kartasheva, A. A., Shekhovtsova, A. V., Bednyakov, S. A., Barke, V. V., Yakovlev, A. V., Grushin, V. A., Bychkova, A. S., Popel, S. I., Korablev, O. I., Rodionov, D. S., Duxbury, N. S., Petrov, O. F., Lisin, E. A., Vasiliev, M. M., Poroikov, A. Yu., Borisov, N. D., Cortecchia, F., Saggin, B., Cozzolino, F., Brienza, D., Scaccabarozzi, D., Mongelluzzo, G., Franzese, G., Porto, C., Rico, A. Martín Ortega, Santiuste, N. Andrés, de Mingo, J. R., Popa, C. I., Silvestro, S., and Brucato, J. R.

Published
2022
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