Insights into solar nebula formation of pyrrhotite from nanoscale disequilibrium phases produced by H2S sulfidation of Fe metal

Zack Gainsforth, Dante Lauretta, Nobumichi Tamura, Andrew J. Westphal, Christine E. Jilly-Rehak, Anna L. Butterworth

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Lauretta (2005) produced sulfide in the laboratory by exposing canonical nebular metal analogs to H2S gas under temperatures and pressures relevant to the formation of the Solar System. The resulting reactions produced a suite of sulfides and nanophase materials not visible at the microprobe scale, but which we have now analyzed by TEM for comparison with interplanetary dust samples and comet Wild 2 samples returned by the Stardust mission. We find the unexpected result that disequilibrium formation favors pyrrhotite over troilite and also produces minority schreibersite, daubréelite, barringerite, taenite, oldhamite, and perryite at the metal-sulfide interface. TEM identification of nanophases and analysis of pyrrhotite superlattice reflections illuminate the formation pathway of disequilibrium sulfide. We discuss the conditions under which such disequilibrium can occur, and implications for formation of sulfide found in extraterrestrial materials.

Original languageEnglish (US)
Pages (from-to)1881-1893
Number of pages13
JournalAmerican Mineralogist
Volume102
Issue number9
DOIs
StatePublished - Sep 1 2017

Fingerprint

sulfidation
solar nebula
pyrrhotite
Sulfides
disequilibrium
sulfides
Metals
sulfide
metal
metals
transmission electron microscopy
schreibersite
Stardust Mission
Wild 2 comet
taenite
troilite
Transmission electron microscopy
interplanetary dust
Solar system
minorities

Keywords

  • comet
  • HS
  • planetary science
  • Pyrrhotite
  • sulfide
  • TEM
  • troilite
  • XRD

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

Cite this

Insights into solar nebula formation of pyrrhotite from nanoscale disequilibrium phases produced by H2S sulfidation of Fe metal. / Gainsforth, Zack; Lauretta, Dante; Tamura, Nobumichi; Westphal, Andrew J.; Jilly-Rehak, Christine E.; Butterworth, Anna L.

In: American Mineralogist, Vol. 102, No. 9, 01.09.2017, p. 1881-1893.

Research output: Contribution to journalArticle

Gainsforth, Zack ; Lauretta, Dante ; Tamura, Nobumichi ; Westphal, Andrew J. ; Jilly-Rehak, Christine E. ; Butterworth, Anna L. / Insights into solar nebula formation of pyrrhotite from nanoscale disequilibrium phases produced by H2S sulfidation of Fe metal. In: American Mineralogist. 2017 ; Vol. 102, No. 9. pp. 1881-1893.
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AU - Jilly-Rehak, Christine E.

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