Rhenium variations in molybdenite (MoS2): Evidence for progressive subsurface oxidation

Joshua Golden, Melissa McMillan, Robert T. Downs, Grethe Hystad, Ian Goldstein, Holly J. Stein, Aaron Zimmerman, Dimitri A. Sverjensky, John T. Armstrong, Robert M. Hazen

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

Temporal trends in Earth's near-surface mineralogy correlate with major events in Earth's geochemical and tectonic history. New and published analyses of 422 molybdenite (MoS2) specimens from 135 localities with known ages from 2.91 billion years (Ga) to 6.3 million years (Ma) reveal two statistically significant trends. First, systematic increases in average and maximum trace concentrations of Re in molybdenite since 3.0Ga point to enhanced oxidative weathering by subsurface fluids. In addition, episodic molybdenum mineralization correlates with five intervals of supercontinent assembly from ~2.7Ga (Kenorland) to 300Ma (Pangaea).

Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalEarth and Planetary Science Letters
Volume366
DOIs
StatePublished - Mar 5 2013

Keywords

  • Great Oxidation Event
  • Mineral evolution
  • Molybdenite
  • Rhenium
  • Supercontinent cycle

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

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    Golden, J., McMillan, M., Downs, R. T., Hystad, G., Goldstein, I., Stein, H. J., Zimmerman, A., Sverjensky, D. A., Armstrong, J. T., & Hazen, R. M. (2013). Rhenium variations in molybdenite (MoS2): Evidence for progressive subsurface oxidation. Earth and Planetary Science Letters, 366, 1-5. https://doi.org/10.1016/j.epsl.2013.01.034