skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Mineralogy and Petrology of Comet 81P/Wild 2 Nucleus Samples

Abstract

The bulk of the comet 81P/Wild 2 (hereafter Wild 2) samples returned to Earth by the Stardust spacecraft appear to be weakly constructed mixtures of nanometer-scale grains, with occasional much larger (over 1 micrometer) ferromagnesian silicates, Fe-Ni sulfides, Fe-Ni metal, and accessory phases. The very wide range of olivine and low-Ca pyroxene compositions in comet Wild 2 requires a wide range of formation conditions, probably reflecting very different formation locations in the protoplanetary disk. The restricted compositional ranges of Fe-Ni sulfides, the wide range for silicates, and the absence of hydrous phases indicate that comet Wild 2 experienced little or no aqueous alteration. Less abundant Wild 2 materials include a refractory particle, whose presence appears to require radial transport in the early protoplanetary disk

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
930143
Report Number(s):
BNL-80799-2008-JA
Journal ID: ISSN 0193-4511; SCEHDK; TRN: US200822%%1201
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Science; Journal Volume: 314; Journal Issue: 5806
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; COMETS; DUSTS; MINERALOGY; PETROLOGY; SILICATE MINERALS; SILICATES; SULFIDES; IRON COMPOUNDS; NICKEL COMPOUNDS; national synchrotron light source

Citation Formats

Zolensky,M., Zega, T., Yano, H., Wirick, S., Westphal, A., Weisberg, M., Weber, I., Warren, J., Velbel, M., and et al.. Mineralogy and Petrology of Comet 81P/Wild 2 Nucleus Samples. United States: N. p., 2006. Web. doi:10.1126/science.1135842.
Zolensky,M., Zega, T., Yano, H., Wirick, S., Westphal, A., Weisberg, M., Weber, I., Warren, J., Velbel, M., & et al.. Mineralogy and Petrology of Comet 81P/Wild 2 Nucleus Samples. United States. doi:10.1126/science.1135842.
Zolensky,M., Zega, T., Yano, H., Wirick, S., Westphal, A., Weisberg, M., Weber, I., Warren, J., Velbel, M., and et al.. Sun . "Mineralogy and Petrology of Comet 81P/Wild 2 Nucleus Samples". United States. doi:10.1126/science.1135842.
@article{osti_930143,
title = {Mineralogy and Petrology of Comet 81P/Wild 2 Nucleus Samples},
author = {Zolensky,M. and Zega, T. and Yano, H. and Wirick, S. and Westphal, A. and Weisberg, M. and Weber, I. and Warren, J. and Velbel, M. and et al.},
abstractNote = {The bulk of the comet 81P/Wild 2 (hereafter Wild 2) samples returned to Earth by the Stardust spacecraft appear to be weakly constructed mixtures of nanometer-scale grains, with occasional much larger (over 1 micrometer) ferromagnesian silicates, Fe-Ni sulfides, Fe-Ni metal, and accessory phases. The very wide range of olivine and low-Ca pyroxene compositions in comet Wild 2 requires a wide range of formation conditions, probably reflecting very different formation locations in the protoplanetary disk. The restricted compositional ranges of Fe-Ni sulfides, the wide range for silicates, and the absence of hydrous phases indicate that comet Wild 2 experienced little or no aqueous alteration. Less abundant Wild 2 materials include a refractory particle, whose presence appears to require radial transport in the early protoplanetary disk},
doi = {10.1126/science.1135842},
journal = {Science},
number = 5806,
volume = 314,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}