Mineralogy of Interplanetary Dust Particles from the Coment Grigg-Skjellerup Dust Stream Collections
Physics and Astronomy
Comet 26P/Grigg-Skjellerup was identified as a source of an Earth-crossing dust stream with low Earth-encounter velocities, with peak anticipated fluxes during April 2003 and 2004. In response to this prediction, NASA performed dedicated stratospheric dust collections using high altitude aircraft to target potential interplanetary dust particles (IDPs) from this comet stream. Low noble gas abundances, high abundances of large deuterium enrichments and presolar grains in IDPs from this collection are consistent with an origin from the comet Grigg-Skjellerup. Here we report a mineralogical study of 6 IDPs from 4 different clusters from the Grigg-Skjellerup collections, L2054 and L2055, using a JEOL 2500SE field-emission scanning TEM (FE-STEM).
Presented at the 71st Annual Meeting of the Meteoritical Society, abstract number 5247.
Meteoritics and Planetary Science
K. Nakamura-Messenger, L.P. Keller, S. Messenger, S.J. Clemett, M.E. Zolensky, R.L. Palma, R.O. Pepin, and S. Wirick, 2008. Mineralogy of Interplanetary Dust Particles from the Comet Grigg-Skjellerup Dust Stream Collections. Meteoritics & Planetary Science 43, A111.
Publisher's Copyright and Source
Copyright © 2008 The Meteoritical Society. Article published by the Meteoritical Society in Meteoritics and Planetary Science, volume 43, issue number S7, July 2008, page A111. Available online on January 26, 2010: http://doi.org/10.1111/j.1945-5100.2008.tb00711.x.