High-pressure iron sulfur compound, Fe3S2, and melting relations in the Fe-FeS system

被引：187

作者：

Fei, YW ^{[1
]}

Bertka, CM ^{[1
]}

Finger, LW ^{[1
]}

机构：

[1] CARNEGIE INST WASHINGTON,CTR HIGH PRESSURE RES,WASHINGTON,DC 20015

来源：

SCIENCE | 1997年 / 275卷 / 5306期

关键词：

D O I：

10.1126/science.275.5306.1621

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

An iron-sulfur compound (Fe3S2) was synthesized at pressures greater than 14 gigapascals in the system Fe-FeS. The formation of Fe3S2 changed the melting relations from a simple binary eutectic system to a binary system with an intermediate compound that melted incongruently. The eutectic temperature in the system at 14 gigapascals was about 400 degrees C lower than that extrapolated from Usselman's data, implying that previous thermal models of Fe-rich planetary cores could overestimate core temperature. If it is found in a meteorite, the Fe3S2 phase could also be used to infer the minimum size of a parent body.

引用

页码：1621 / 1623

页数：3

共 21 条

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