| タイトル | Using the Fe/Mn Ratio of FeO-Rich Olivine In WILD 2, Chondrite Matrix, and Type IIA Chondrules to Disentangle Their Histories |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120001947 |
| 著者（英） | Frank, David R.; Zolensky, M. E.; Le, L. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2012-01-01 |
| 言語 | eng |
| 内容記述 | The Stardust Mission returned a large abundance of impactors from Comet 81P/Wild2 in the 5-30 m range. The preliminary examination of just a limited number of these particles showed that the collection captured abundant crystalline grains with a diverse mineralogy [1,2]. Many of these grains resemble those found in chondrite matrix and even contain fragments of chondrules and CAIs [1-3]. In particular, the olivine found in Wild 2 exhibits a wide compositional range (Fa0-97) with minor element abundances similar to the matrix olivine found in many carbonaceous chondrites (CCs) and unequilibrated ordinary chondrites (UOCs). Despite the wide distribution of Fa content, the olivine found in the matrices of CCs, UOCs, and Wild 2 can be roughly lumped into two types based solely on fayalite content. In fact, in some cases, a distinct bi-modal distribution is observed. |
| NASA分類 | Geophysics |
| レポートNO | JSC-CN-25686 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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