Dissolution of K in molten iron at high pressure and temperature
Open Access
- 6 August 1993
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 20 (15) , 1651-1654
- https://doi.org/10.1029/93gl01538
Abstract
Partitioning of K between molten iron and silicate melt was examined at about 26 GPa and 2600°C using a mixture of pure iron and natural microcline as the starting material. The dissolution of K in molten iron up to about 0.2 wt % was confirmed. The distribution coefficient of K between molten iron and silicate melt was about 3.8×10−2 (atomic ratio). This value suggests the presence of 5 ppm K in the earth's core, yielding 3×1010 W for the present day heat generation by K.Keywords
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