Indication of drier periods on Mars from the chemistry and mineralogy of atmospheric dust

Abstract

The ubiquitous atmospheric dust on Mars is well mixed by periodic global dust storms, and such dust carries information about the environment in which it once formed and hence about the history of water on Mars1. The Mars Exploration Rovers have permanent magnets to collect atmospheric dust for investigation by instruments on the rovers2,3. Here we report results from Mössbauer spectroscopy and X-ray fluorescence of dust particles captured from the martian atmosphere by the magnets. The dust on the magnets contains magnetite and olivine; this indicates a basaltic origin of the dust and shows that magnetite, not maghemite, is the mineral mainly responsible for the magnetic properties of the dust. Furthermore, the dust on the magnets contains some ferric oxides, probably including nanocrystalline phases, so some alteration or oxidation of the basaltic dust seems to have occurred. The presence of olivine indicates that liquid water did not play a dominant role in the processes that formed the atmospheric dust.

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Figure 1: Selected peak area ratios from APX spectra.
Figure 2: Mössbauer spectrum of airborne dust. Mössbauer spectrum of the dust attracted to the capture magnet on Opportunity, sol 328–330; data are from the 14.4 keV channel of the Mössbauer spectrometer.

References

  1. 1

    Knudsen, J. M. et al. Mössbauer spectroscopy on the surface of Mars. Why? Hyperfine Interact. 68, 83–94 (1991)

    ADS  CAS  Article  Google Scholar 

  2. 2

    Squyres, S. W. et al. The Athena Mars Rover science investigation. J. Geophys. Res. 108(E12), doi:10.1029/2003JE002121 (2003)

  3. 3

    Madsen, M. B. et al. Magnetic properties experiments on the Mars Exploration Rover mission. J. Geophys. Res. 108(E12), 8069, doi:10.1029/2002JE002029 (2003)

    Article  Google Scholar 

  4. 4

    Tomasko, M. G., Doose, L. R., Lemmon, M., Smith, P. H & Wegryn, E. Properties of dust in the Martian atmosphere from the Imager on Mars Pathfinder. J. Geophys. Res. 104, 8987–9007 (1999)

    ADS  Article  Google Scholar 

  5. 5

    Lemmon, M. et al. Atmospheric imaging results from the Mars Exploration Rovers. Science 306, 1753–1756 (2004)

    ADS  CAS  Article  Google Scholar 

  6. 6

    Pollack, J. B. et al. Properties and effects of dust particles suspended in the Martian atmosphere. J. Geophys. Res. 84, 2924–2945 (1979)

    ADS  Article  Google Scholar 

  7. 7

    Squyres, S. W. et al. The Spirit Rover's Athena science investigation at Gusev Crater, Mars. Science 305, 794–799 (2004)

    ADS  CAS  Article  Google Scholar 

  8. 8

    Squyres, S. W. et al. The Opportunity Rover's Athena science investigation at Meridiani Planum, Mars. Science 306, 1698–1703 (2004)

    ADS  CAS  Article  Google Scholar 

  9. 9

    Hviid, S. F. et al. Magnetic properties experiments on the Mars Pathfinder Lander: Preliminary results. Science 278, 1768–1770 (1997)

    ADS  CAS  Article  Google Scholar 

  10. 10

    Bertelsen, P. et al. Magnetic properties experiments on the Mars Exploration Rover Spirit at Gusev Crater. Science 305, 827–829 (2004)

    ADS  CAS  Article  Google Scholar 

  11. 11

    Kinch, K. M. et al. Preliminary analysis of the MER magnetic properties experiment using a CFD model. Planet. Space Sci. (submitted)

  12. 12

    Gellert, R. et al. Chemistry of rocks and soils in Gusev Crater from the Alpha Particle X-ray Spectrometer. Science 305, 829–832 (2004)

    ADS  CAS  Article  Google Scholar 

  13. 13

    Rieder, R. et al. Chemical composition of Martian rocks and soils at Meridiani Planum from the Alpha Particle X-ray Spectrometer. Science 306, 1746–1749 (2004)

    ADS  CAS  Article  Google Scholar 

  14. 14

    Yen, A. et al. An integrated view of the chemistry and mineralogy of Martian soils. Nature doi:10.1038/nature03637 (this issue)

  15. 15

    Klingelhöfer, G. et al. Athena MIMOS II Mössbauer spectrometer investigation. J. Geophys. Res. 108, 8067–8084 (2003)

    Article  Google Scholar 

  16. 16

    Morris, R. V. et al. Mineralogy at Gusev Crater from the Mössbauer Spectrometer on the Spirit Rover. Science 305, 833–836 (2004)

    ADS  CAS  Article  Google Scholar 

  17. 17

    Schröder, C., Klingelhöfer, G. & Tremel, W. Weathering of Fe-bearing minerals under Martian conditions, investigated by Mössbauer spectroscopy. Planet. Space Sci. 52, 997–1010 (2004)

    ADS  Article  Google Scholar 

  18. 18

    Klingelhöfer, G. et al. Jarosite and hematite at Meridiani Planum from Opportunity's Mössbauer spectrometer. Science 306, 1740–1745 (2004)

    ADS  Article  Google Scholar 

  19. 19

    Levin, G. V. & Straat, P. A. Viking labeled release biology experiment: Interim results. Science 194, 1322–1329 (1976)

    ADS  CAS  Article  Google Scholar 

  20. 20

    Hargraves, R. B., Collinson, D. W., Arvidson, R. E. & Cates, P. M. The Viking magnetic properties experiment: Extended mission results. J. Geophys. Res. 84, 8379–8384 (1979)

    ADS  Article  Google Scholar 

  21. 21

    Madsen, M. B. et al. The magnetic properties experiments on Mars Pathfinder. J. Geophys. Res. 104, 8761–8779 (1999)

    ADS  CAS  Article  Google Scholar 

  22. 22

    Morris, R. V. et al. Phyllosilicate-poor palagonitic dust form Mauna Kea Volcano (Hawaii): A mineralogical analogue for magnetic martian dust? J. Geophys. Res. 106, 5057–5083 (2001)

    ADS  CAS  Article  Google Scholar 

  23. 23

    Yen, A. et al. Subsurface weathering of rocks and soils at Gusev Crater. Lunar Planet. Sci. Conf. XXXVI, 1571 (2005)

    ADS  Google Scholar 

  24. 24

    Smith, P. The Phoenix Mission to Mars. Lunar Planet. Sci. Conf. XXXV, 2050 (2004)

    ADS  Google Scholar 

Download references

Acknowledgements

This paper is dedicated to the memory of Jens Martin Knudsen (1930–2005), who inspired and promoted our work with Mars over almost two decades. During his last year, a long-standing aspiration of his came true: a Mössbauer spectrum of martian dust was obtained. The Danish authors wish to thank the Athena Science Team and JPL engineers for supporting and carrying out the sometimes tricky, currently ongoing magnet observations on both rovers. Support from the Danish Research Agency, the Thomas B. Thrige foundation and DELTA Danish Electronics, Light and Acoustics is acknowledged.

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Correspondence to Walter Goetz.

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Goetz, W., Bertelsen, P., Binau, C. et al. Indication of drier periods on Mars from the chemistry and mineralogy of atmospheric dust. Nature 436, 62–65 (2005). https://doi.org/10.1038/nature03807

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