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Mineralogy at Meridiani Planum from the Mini-TES Experiment on the Opportunity Rover

by Glotch, T. D. , Gorelick, N. , Calvin, W. M. , Fergason, R. L. , Morris, R. V. , Hayes, A. G. , Fallacaro, A. , Mehall, G. L. , Hamilton, V. E. , Knudson, A. T. , McSween, H. Y. , Rogers, A. D. , Budney, C. , Moersch, J. E. , Johnson, J. R. , Anwar, S. , Arvidson, R. E. , Smith, M. D. , Blaney, D. L. , Ruff, S. W. , Wyatt, M. B. , Graff, T. G. , Bandfield, J. L. , Mehall, L. K. , Wolff, M. J. , Christensen, P. R. , Squyres, S. W.

in Analysis / Basalt / Calcium Sulfate / Composition / Discovery and exploration / Extraterrestrial Environment / Ferric Compounds / Geologic Sediments / Hematite / Impact craters / Iron Compounds / Least Squares Statistics / Libraries / Magnesium / Magnesium Compounds / Magnesium Sulfate / Mars / Mars (Planet) / Mars probes / Mineral composition / Mineralogical research / Mineralogy / Minerals / Olivine / Opportunities / Outcrops / Oxides / Research Articles and Reports / Rocks / Sand / Scientific imaging / Silica / Silicates / Space exploration / Spacecraft / Sulfates / Surface (Geology) / Water / Wavelengths

2004

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Mineralogy at Meridiani Planum from the Mini-TES Experiment on the Opportunity Rover

2004

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Mineralogy at Meridiani Planum from the Mini-TES Experiment on the Opportunity Rover

2004

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Journal Article

Mineralogy at Meridiani Planum from the Mini-TES Experiment on the Opportunity Rover

Glotch, T. D.,

Gorelick, N.,

Calvin, W. M.,

Fergason, R. L.,

Morris, R. V.,

Hayes, A. G.,

Fallacaro, A.,

Mehall, G. L.,

Hamilton, V. E.,

Knudson, A. T.,

McSween, H. Y.,

Rogers, A. D.,

Budney, C.,

Moersch, J. E.,

Johnson, J. R.,

Anwar, S.,

Arvidson, R. E.,

Smith, M. D.,

Blaney, D. L.,

Ruff, S. W.,

Wyatt, M. B.,

Graff, T. G.,

Bandfield, J. L.,

Mehall, L. K.,

Wolff, M. J.,

Christensen, P. R.,

Squyres, S. W.

2004

Overview

The Miniature Thermal Emission Spectrometer (Mini-TES) on Opportunity investigated the mineral abundances and compositions of outcrops, rocks, and soils at Meridiani Planum. Coarse crystalline hematite and olivine-rich basaltic sands were observed as predicted from orbital TES spectroscopy. Outcrops of aqueous origin are composed of 15 to 35% by volume magnesium and calcium sulfates [a high-silica component modeled as a combination of glass, feldspar, and sheet silicates (~20 to 30%)], and hematite; only minor jarosite is identified in Mini-TES spectra. Mini-TES spectra show only a hematite signature in the millimeter-sized spherules. Basaltic materials have more plagioclase than pyroxene, contain olivine, and are similar in inferred mineral composition to basalt mapped from orbit. Bounce rock is dominated by clinopyroxene and is close in inferred mineral composition to the basaltic martian meteorites. Bright wind streak material matches global dust. Waterlain rocks covered by unaltered basaltic sands suggest a change from an aqueous environment to one dominated by physical weathering.

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Publisher

American Association for the Advancement of Science,The American Association for the Advancement of Science

Subject

Analysis

/ Basalt

/ Calcium Sulfate

/ Composition

/ Discovery and exploration

/ Extraterrestrial Environment

/ Ferric Compounds