Calcium-Aluminum-Rich Inclusions from Enstatite Chondrites: Indigenous or Foreign?
- 25 August 2000
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 289 (5483) , 1330-1333
- https://doi.org/10.1126/science.289.5483.1330
Abstract
The primary mineral assemblages and initial 26 Al/ 27 Al ratios of rare calcium-aluminum–rich inclusions (CAIs) from enstatite (E) chondrites are similar to those of CAIs from other chondrite classes. CAIs from all chondrite classes formed under oxidizing conditions that are much different from the reducing conditions under which the E chondrites formed. Either CAIs formed at an earlier, more oxidizing epoch in the region where E chondrites ultimately formed, or they formed at a different place in the solar nebula and were transported into the E chondrite formation region.Keywords
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