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Helium isotopic ratios in carbonaceous chondrites: Significant for the early solar nebula and circumstellar diamonds?

Busemann, H.; Baur, H. and Wieler, R. (2001). Helium isotopic ratios in carbonaceous chondrites: Significant for the early solar nebula and circumstellar diamonds? In: 32nd Lunar and Planetary Science Conference, 12-16 March 2001, Houston, Texas, USA.

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Abstract

Stepwise etching of acid-resistant residues from carbonaceous chondrites yields a new, extraordinarily low He isotopic ratio for phase Q that might represent early solar nebula composition. A much lower ratio possibly characterizes He-P3 from circumstellar diamonds.

Item Type: Conference Item
Extra Information: Abstract #1598
Keywords: carbonaceous chondrites;
Academic Unit/Department: Science > Physical Sciences
Item ID: 8341
Depositing User: Kyra Proctor
Date Deposited: 05 Jul 2007
Last Modified: 08 Dec 2010 02:36
URI: http://oro.open.ac.uk/id/eprint/8341
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