Grady, Monica; Verchovsky, Sasha; Franchi, Ian; Wright, Ian and Pillinger, Colin
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From the introduction: Tagish Lake has been classified as a CI2 chondrite  with an interstellar grain abundance enhanced over that of CI1 and CM2 chondrites . Noble gases have been used as markers for the presence of exotic, presolar grains in chondritic meteorites: Xe-HL (nanodiamonds) and Xe-s/Ne-E (SiC). We have measured 4He, Ne, Ar and Xe in whole-rock Tagish Lake, and an orthophosphoric acid-resistant residue, in an effort to define more precisely the relative abundances of the different presolar components present, and to verify whether or not the meteorite has an enhanced complement of presolar diamonds. For comparison, whole-rock samples of Orgueil and Murchison have also been analysed using the same experimental procedure.
|Item Type:||Conference Item|
|Extra Information:||Abstract #5341|
|Academic Unit/Department:||Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Kyra Proctor|
|Date Deposited:||17 Jul 2007|
|Last Modified:||24 Feb 2016 09:18|
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