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Journal Articles Meteoritics and Planetary Science Year : 2014

Stardust Interstellar Preliminary Examination VIII: Identification of crystalline material in two interstellar candidates

Zack Gainsforth
  • Function : Author
Frank E. Brenker
  • Function : Author
Alexandre S. Simionovici
  • Function : Author
Sylvia Schmitz
  • Function : Author
Manfred Burghammer
  • Function : Author
Anna L. Butterworth
  • Function : Author
Peter Cloetens
  • Function : Author
Juan-Angel Sans Tresserras
  • Function : Author
Tom Schoonjans
  • Function : Author
Geert Silversmit
  • Function : Author
Vicente A. Solé
  • Function : Author
Bart Vekemans
  • Function : Author
Laszlo Vincze
  • Function : Author
Andrew J. Westphal
  • Function : Author
Carlton Allen
  • Function : Author
David Anderson
Asna Ansari
  • Function : Author
Saša Bajt
  • Function : Author
Ron K. Bastien
  • Function : Author
Nabil Bassim
  • Function : Author
Hans A. Bechtel
  • Function : Author
Janet Borg
  • Function : Author
John Bridges
  • Function : Author
Donald E. Brownlee
  • Function : Author
Mark Burchell
  • Function : Author
Hitesh Changela
  • Function : Author
Andrew M. Davis
  • Function : Author
Ryan Doll
  • Function : Author
Christine Floss
  • Function : Author
George Flynn
  • Function : Author
Patrick Fougeray
  • Function : Author
David Frank
  • Function : Author
Eberhard Grün
  • Function : Author
Philipp R. Heck
  • Function : Author
Jon K. Hillier
  • Function : Author
Peter Hoppe
  • Function : Author
Bruce Hudson
  • Function : Author
Joachim Huth
  • Function : Author
Brit Hvide
  • Function : Author
Anton Kearsley
  • Function : Author
Ashley J. King
  • Function : Author
Barry Lai
  • Function : Author
Jan Leitner
  • Function : Author
Hugues Leroux
  • Function : Author
Ariel Leonard
  • Function : Author
Robert Lettieri
  • Function : Author
William Marchant
  • Function : Author
Larry R. Nittler
  • Function : Author
Ryan Ogliore
  • Function : Author
Wei Ja Ong
  • Function : Author
Frank Postberg
  • Function : Author
Mark C. Price
  • Function : Author
Scott A. Sandford
  • Function : Author
Ralf Srama
  • Function : Author
Thomas Stephan
  • Function : Author
Veerle Sterken
  • Function : Author
Julien Stodolna
  • Function : Author
Rhonda M. Stroud
  • Function : Author
Steven Sutton
  • Function : Author
Mario Trieloff
  • Function : Author
Peter Tsou
  • Function : Author
Akira Tsuchiyama
  • Function : Author
Tolek Tyliszczak
  • Function : Author
Joshua Von Korff
  • Function : Author
Daniel Zevin
  • Function : Author
Michael E. Zolensky
  • Function : Author

Abstract

Using synchrotron-based X-ray diffraction measurements, we identified crystalline material in two particles of extraterrestrial origin extracted from the Stardust Interstellar Dust Collector. The first particle, I1047,1,34 (Hylabrook), consisted of a mosaiced olivine grain approximately 1 \textmum in size with internal strain fields up to 0.3%. The unit cell dimensions were a = 4.85 \textpm 0.08 \r A, b = 10.34 \textpm 0.16 \r A, c = 6.08 \textpm 0.13 \r A (2σ). The second particle, I1043,1,30 (Orion), contained an olivine grain ? 2 \textmum in length and 500 nm in width. It was polycrystalline with both mosaiced domains varying over ? 20 and additional unoriented domains, and contained internal strain fields 1%. The unit cell dimensions of the olivine were a = 4.76 \textpm 0.05 \r A, b = 10.23 \textpm 0.10 \r A, c = 5.99 \textpm 0.06 \r A (2σ), which limited the olivine to a forsteritic composition (2σ). Orion also contained abundant spinel nanocrystals of unknown composition, but unit cell dimension a = 8.06 \textpm 0.08 \r A (2σ). Two additional crystalline phases were present and remained unidentified. An amorphous component appeared to be present in both these particles based on STXM and XRF results reported elsewhere.

Dates and versions

hal-02351162 , version 1 (06-11-2019)

Identifiers

Cite

Zack Gainsforth, Frank E. Brenker, Alexandre S. Simionovici, Sylvia Schmitz, Manfred Burghammer, et al.. Stardust Interstellar Preliminary Examination VIII: Identification of crystalline material in two interstellar candidates. Meteoritics and Planetary Science, 2014, 49 (9), pp.1645--1665. ⟨10.1111/maps.12148⟩. ⟨hal-02351162⟩
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