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Published August 2019 | Published
Journal Article Open

Mineralogy, Petrography, and Oxygen Isotopic Compositions of Ultrarefractory Inclusions from Carbonaceous Chondrites

Abstract

Fine-grained CAIs with Group II rare earth element (REE) patterns condensed from a gaseous reservoir from which the ultrarefractory (UR) REEs had been removed. The carriers of UR REEs are poorly known. Here we report on the mineralogy, petrography and O-isotope compositions of 25 CAIs, presumably UR (REEs have not yet measured), from CR2, CM2, C3.0, CO3.0‒3.6, CV3.1‒3.6, and CH3.0 carbonaceous chondrites (CCs).

Additional Information

© 2019 The Meteoritical Society. Issue Online: 19 June 2019; Version of Record online: 19 June 2019.

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August 19, 2023
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