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Title: Fine-grained material associated with a large sulfide returned from Comet 81P/Wild 2

Abstract

In a consortium analysis of a large particle captured from the coma of comet 81P/Wild 2 by the Stardust spacecraft, we discuss the discovery of a field of fine-grained material (FGM) in contact with a large sulfide particle. The FGM was partially located in an embayment in the sulfide. Because of this, some of the FGM appears to have been protected from damage during hypervelocity capture in aerogel. Some of the FGM particles are indistinguishable in their characteristics from common components of chondritic-porous interplanetary dust particles, including glass with embedded metals and sulfides and equilibrated aggregates. The sulfide exhibits surprising Ni-rich lamellae, which may suggest that this particle experienced a long-duration heating event after its formation but before incorporation into Wild 2.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9]
  1. Univ. of California, Berkeley, CA (United States)
  2. Univ. of Washington, Seattle, WA (United States)
  3. Washington Univ., St. Louis, MO (United States)
  4. NASA Johnson Space Center, Houston, TX (United States)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. American Museum of Natural History (AMNH), New York, NY (United States)
  7. Univ. of Hawai‘i at Manoa, Honolulu HI (United States)
  8. NASA Ames Research Center, Moffett Field, CA (United States)
  9. Univ. of Colorado, Boulder, CO (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Aeronautic and Space Administration (NASA)
OSTI Identifier:
1542353
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Meteoritics and Planetary Science
Additional Journal Information:
Journal Volume: 54; Journal Issue: 5; Journal ID: ISSN 1086-9379
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Gainsforth, Z., Westphal, A. J., Butterworth, A. L., Jilly‐Rehak, C. E., Brownlee, D. E., Joswiak, D. J., Ogliore, R. C., Zolensky, M. E., Bechtel, H. A., Ebel, D. S., Huss, G. R., Sandford, S. A., and White, A. J. Fine-grained material associated with a large sulfide returned from Comet 81P/Wild 2. United States: N. p., 2019. Web. doi:10.1111/maps.13265.
Gainsforth, Z., Westphal, A. J., Butterworth, A. L., Jilly‐Rehak, C. E., Brownlee, D. E., Joswiak, D. J., Ogliore, R. C., Zolensky, M. E., Bechtel, H. A., Ebel, D. S., Huss, G. R., Sandford, S. A., & White, A. J. Fine-grained material associated with a large sulfide returned from Comet 81P/Wild 2. United States. doi:10.1111/maps.13265.
Gainsforth, Z., Westphal, A. J., Butterworth, A. L., Jilly‐Rehak, C. E., Brownlee, D. E., Joswiak, D. J., Ogliore, R. C., Zolensky, M. E., Bechtel, H. A., Ebel, D. S., Huss, G. R., Sandford, S. A., and White, A. J. Mon . "Fine-grained material associated with a large sulfide returned from Comet 81P/Wild 2". United States. doi:10.1111/maps.13265. https://www.osti.gov/servlets/purl/1542353.
@article{osti_1542353,
title = {Fine-grained material associated with a large sulfide returned from Comet 81P/Wild 2},
author = {Gainsforth, Z. and Westphal, A. J. and Butterworth, A. L. and Jilly‐Rehak, C. E. and Brownlee, D. E. and Joswiak, D. J. and Ogliore, R. C. and Zolensky, M. E. and Bechtel, H. A. and Ebel, D. S. and Huss, G. R. and Sandford, S. A. and White, A. J.},
abstractNote = {In a consortium analysis of a large particle captured from the coma of comet 81P/Wild 2 by the Stardust spacecraft, we discuss the discovery of a field of fine-grained material (FGM) in contact with a large sulfide particle. The FGM was partially located in an embayment in the sulfide. Because of this, some of the FGM appears to have been protected from damage during hypervelocity capture in aerogel. Some of the FGM particles are indistinguishable in their characteristics from common components of chondritic-porous interplanetary dust particles, including glass with embedded metals and sulfides and equilibrated aggregates. The sulfide exhibits surprising Ni-rich lamellae, which may suggest that this particle experienced a long-duration heating event after its formation but before incorporation into Wild 2.},
doi = {10.1111/maps.13265},
journal = {Meteoritics and Planetary Science},
issn = {1086-9379},
number = 5,
volume = 54,
place = {United States},
year = {2019},
month = {3}
}

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