Initial results from the Mini-TES experiment in Gusev crater from the Spirit rover
Science
By: P. R. Christensen, S. W. Ruff, R.L. Fergason, A.T. Knudson, S. Anwar, R. E. Arvidson, J. L. Bandfield, D.L. Blaney, C. Budney, W. M. Calvin, T.D. Glotch, M.P. Golombek, N. Gorelick, T.G. Graff, V.E. Hamilton, A. Hayes, J. R. Johnson, H.Y. McSween Jr., G.L. Mehall, L.K. Mehall, J.E. Moersch, R.V. Morris, A.D. Rogers, M. D. Smith, S. W. Squyres, M.J. Wolff, and M.B. Wyatt
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Abstract
The Miniature Thermal Emission Spectrometer (Mini-TES) on Spirit has studied the mineralogy and thermophysical properties at Gusev crater. Undisturbed soil spectra show evidence for minor carbonates and bound water. Rocks are olivine-rich basalts with varying degrees of dust and other coatings. Dark-toned soils observed on disturbed surfaces may be derived from rocks and have derived mineralogy (??5 to 10%) of 45% pyroxene (20% Ca-rich pyroxene and 25% pigeonite), 40% sodic to intermediate plagioclase, and 15% olivine (forsterite 45% ??5 to 10). Two spectrally distinct coatings are observed on rocks, a possible indicator of the interaction of water, rock, and airfall dust. Diurnal temperature data indicate particle sizes from 40 to 80 ??m in hollows to ???0.5 to 3 mm in soils.
Suggested Citation
Christensen, P.R., Ruff, S.W., Fergason, R., Knudson, A., Anwar, S., Arvidson, R., Bandfield, J., Blaney, D., Budney, C., Calvin, W.M., Glotch, T., Golombek, M., Gorelick, N., Graff, T., Hamilton, V., Hayes, A., Johnson, J.R., McSween, H., Mehall, G., Mehall, L., Moersch, J., Morris, R., Rogers, A., Smith, M.D., Squyres, S.W., Wolff, M., and Wyatt, M., 2004, Initial results from the Mini-TES experiment in Gusev crater from the Spirit rover: Science, v. 305, no. 5685, p. 837-842, https://doi.org/10.1126/science.1100564.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Initial results from the Mini-TES experiment in Gusev crater from the Spirit rover |
| Series title | Science |
| DOI | 10.1126/science.1100564 |
| Volume | 305 |
| Issue | 5685 |
| Year Published | 2004 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Science |
| First page | 837 |
| Last page | 842 |