Mineralogy of Interplanetary Dust Particles from the Coment Grigg-Skjellerup Dust Stream Collections

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Conference Abstract

Publication Date



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.

Publication Title

Meteoritics and Planetary Science