AN UNEQUILIBRATED INCLUSION IN THE ROMERO (H3–4) CHONDRITE
作者:
A.L. Graham,
期刊:
Meteoritics
(WILEY Available online 1983)
卷期:
Volume 18,
issue 1
页码: 51-61
ISSN:0026-1114
年代: 1983
DOI:10.1111/j.1945-5100.1983.tb00576.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Within the chondritic matrix of Romero (H3–4) is a metal‐poor inclusion consisting largely of olivines showing quench textures, minor low‐Ca pyroxene and rare metal and sulphide. The olivines within this inclusion have the dominant composition Fa8with a range Fa7, 5–17. The matrix (Romero host) olivines are, in the main, equilibrated with an average composition of Fa18, but are lower in CaO and Cr2O3than the inclusion olivines. The high chromium content of the inclusion olivines suggests that they formed under conditions different from those represented by the other olivines in
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