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The Abundance Pattern of Elements Having Low Nebular Condensation Temperatures in Interplanetary Dust Particles: Evidence for a New Chemical Type of Chondritic Material

Published online by Cambridge University Press:  27 February 2018

G. J. Flynn ,
S. Bajt ,
S. R. Sutton ,
M. E. Zolensky ,
K. L. Thomas  and
L. P Keller
G. J. Flynn
Affiliation:
Dept of Physics, SUNY-Plattsburgh, Pittsburgh NY, 12901
S. Bajt
Affiliation:
Center for Advanced Radiation Sources, The University of Chicago, Chicago IL 60637
S. R. Sutton
Affiliation:
Dept. of Geophysical Science, The University of Chicago, Chicago IL 60637
M. E. Zolensky
Affiliation:
NASA Johnson Space Center, Houston TX 77058
K. L. Thomas
Affiliation:
Lockheed-Martin, Houston TX, 77058
L. P Keller
Affiliation:
MVA Associates, Norcross GA, 30093

Abstract

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The abundances of Ni, Fe, Cr, Mn, P, Cu, K, Na, Ga, Ge, Se, Zn, S, Br, and C were measured in interplanetary dust particles (IDPs) collected from the Earth's stratosphere. All elements with nebular condensation temperatures lower than Mn, except S, were enriched relative to the most volatile-rich type of meteorite while the refractory elements Cr and Ni were present at chondritic abundances. This element abundance pattern is consistent with nebular condensation, suggesting the IDPs condensed at either a different location or time in the evolving solar nebula than do the meteorites. The enrichments of the major elements C, Na, P, and K exclude the possibility that the volatile enrichment in IDPs results from a minor amount of contamination.

Type
VIII. Chemistry of the Interplanetary Dust
Information
International Astronomical Union Colloquium , Volume 150: Physics, Chemistry and Dynamics of Interplanetary Dust , 1996 , pp. 291 - 294
Copyright
Copyright © Astronomical Society of the Pacific 1996

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