Davidson, J.; Busemann, H.; Franchi, I. A. and Grady, M. M.
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Presolar grains are particularly abundant in primitive extraterrestrial materials such as IDPs [e.g. 1-3] and the matrices of the least altered chondrites [4-6]. To date, the presolar silicate and oxide inventories of the primitive chondrites Acfer 094 [4-7] and ALHA 77307  have been reported extensively. More recently, the search for presolar silicates and oxides has been extended to the CR [8,9] and ungrouped chondrites .
Here we report the presolar grain inventories (silicates, oxides, SiC, and other C-anomalous phases) determined for Adelaide and RBT 04133 by Nano-SIMS raster ion imaging. Adelaide (an ungrouped C3)was chosen for this study because (i) it is primitive and (ii) it was previously reported to have a low presolar silicate abundance of ~41 ppm  in comparison to Acfer 094 and ALHA 77307; 90-175 [7,12] and 95
ppm respectively . RBT 04133 (a mildly thermally altered CV3) was also analysed as part of an ongoing study .
|Item Type:||Conference Item|
|Copyright Holders:||The Authors|
|Academic Unit/Department:||?? scie-pssr ??
Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Patricia Taylor|
|Date Deposited:||17 May 2012 12:21|
|Last Modified:||16 Nov 2012 14:06|
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