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Hyperfine Interactions

, Volume 186, Issue 1–3, pp 141–145 | Cite as

A Mössbauer spectroscopic study of simulated weathering of Didwana ordinary chondrites

  • H. C. Verma
  • Neeraj Bijlani
  • Amita Tripathi
  • R. P. Tripathi
Article
  • 30 Downloads

Abstract

A sample of an ordinary chondrite fall, Didwana-Rajod, Rajasthan, India which was shown to be largely unweathered, was exposed to weathering in laboratory conditions. Wet and dry cycle of different strengths (0.01 and 0.1 M) of sodium sulfate solution was applied for different periods of time (maximum of 140 days). An attempt was made to simulate meteorite weathering more or less analogous to environmental exposure in desert-like conditions. It is found that lower concentration of the attacking ions is more effective in weathering the meteorite. Kamacite is affected in early cycles of weathering more than any other mineral. The olivine to pyroxene ratio is much less affected.

Keywords

Mössbauer Didwana meteorite Ordinary chondrites 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • H. C. Verma
    • 1
  • Neeraj Bijlani
    • 2
  • Amita Tripathi
    • 2
  • R. P. Tripathi
    • 2
  1. 1.Department of PhysicsIndian Institute of TechnologyKanpurIndia
  2. 2.Department of PhysicsJ.N.V. University JodhpurJodhpurIndia

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