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Related Experiment Videos

Sulfur in achondritic meteorites.

E K Gibson1, C B Moore, T M Primus

  • 1Experimental Planetology Branch, NASA Johnson Space Center, Houston, TX 77058, USA.

Meteoritics
|September 30, 1985
PubMed
Summary

This study measured total sulfur in 48 achondrites, revealing significant variations. Enstatite achondrites showed the highest sulfur content, highlighting the heterogeneous nature of these extraterrestrial materials.

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Area of Science:

  • Geochemistry
  • Planetary Science
  • Cosmochemistry

Background:

  • Achondrites are meteorites lacking chondrules, offering insights into planetary differentiation.
  • Sulfur is a key element in understanding the formation and evolution of rocky bodies.

Purpose of the Study:

  • To quantify total sulfur abundances across various achondrite groups.
  • To investigate the heterogeneity of sulfur distribution in achondrites.

Main Methods:

  • Elemental analysis of sulfur content in 48 achondrite samples.
  • Categorization of samples into eucrites, howardites, diogenites, shergottites, enstatite achondrites, and chassignites.

Main Results:

  • Sulfur content varied widely across achondrite groups, ranging from 360 to 8580 micrograms S/g.
Keywords:
NASA Center JSCNASA Discipline ExobiologyNASA Discipline Number 50-20NASA Program Exobiology

Related Experiment Videos

  • Enstatite achondrites exhibited the highest median sulfur content (6020 micrograms S/g).
  • Howardites and shergottites showed relatively high median sulfur concentrations (2340 and 1940 micrograms S/g, respectively).

    • Conclusions:

    • Observed variations in sulfur concentrations are attributed to the small-scale heterogeneous nature of achondrites.
    • Discrete sulfide mineral grains are a primary factor contributing to sulfur heterogeneity.
    • Sulfur abundance data provides valuable information on the formation processes of achondrites.