CLASSIFICATION OF THE ALLAN HILLS A77307 METEORITE
作者:
D.W.G. Sears,
M. Ross,
期刊:
Meteoritics
(WILEY Available online 1983)
卷期:
Volume 18,
issue 1
页码: 1-7
ISSN:0026-1114
年代: 1983
DOI:10.1111/j.1945-5100.1983.tb00570.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
The Allan Hills A77307 meteorite has variously been described as a CO, CV, and a unique CO‐CM related chondrite. We have found that its thermolum‐inescence properties are very different from the established members of the CO chondrite class; it has a TL peak at 170 and a suggestion of a peak at 250°C, while CO chondrites have peaks at 91 ± 7 and 203 ± 11°C. Either the meteorite has suffered some form of alteration or it is not a normal CO chondrite. The latter is consistent with petrologic and compositional data which we interpret to indicate that although Allan Hills A77307 is related to CO chondrites it is not a normal member of tha
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