PRESSURE EFFECT ON MN, CO AND NI PARTITIONING BETWEEN IRON HYDRIDE AND MANTLE MINERALS

被引：0
|
作者：
SUZUKI, T [1 ]
AKAOGI, M [1 ]
YAGI, T [1 ]
机构：
[1] UNIV TOKYO, INST SOLID STATE PHYS, MINATO KU, TOKYO 106, JAPAN
来源：
PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES | 1994年 / 70卷 / 03期
关键词：
HIGH PRESSURE; ELEMENTAL PARTITION; EARTHS CORE;
D O I：
暂无
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：
Partitioning behaviors of Mn, Co and Ni between iron hydride and mantle minerals (olivine, pyroxene and magnesiowustite) under high pressure were experimentally investigated at 1400 degrees C and 3 similar to 11 GPa. The present experimental results showed that the siderophile nature of Co and Ni, and the lithophile nature of Mn decrease under high pressures: all the observed metal/mineral partition coefficients, K'=(X(i)/X(Fe))metal/(X(i)/X(Fe))(mineral), i=Mn, Co and Ni, approach 1 with increase in pressure. K' also depends on the composition of the mineral phase: K' decreases with an increase in MgO mol fraction. From these experimental results, it is expected that the observed upper mantle elemental abundance may be explained by the equilibrium between metal and silicates under extremely high pressure.
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页码：31 / 36
页数：6
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