Composition of the core, I. Solubility of oxygen in molten iron at high temperatures

Details Composition of the core, I. Solubility of oxygen in molten iron at high temperatures Composition of the core, I. Solubility of oxygen in molten iron at high temperatures

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984e%26psl..71...85o&link_type=abstract

Earth and Planetary Science Letters, Volume 71, Issue 1, p. 85-93.

Computer Science

30

Scientific paper

Experiments on the solubility of FeO in molten iron have been carried out at temperatures between 2100 and 2550°C. The results show that liquid FeO is extensively soluble in molten iron at 2500°C and indicate that they probably become completely miscible above 2800°C. Liquid iron in equilibrium with crystalline magnesiowüstite (Mg0.8Fe0.2)O which is believed to be an important mineral in the lower mantle, would dissolve about 14 mol.% of FeO at 2500°C and 40 mol.% of FeO at 2800°C. The geochemical implications of these results are discussed. It is concluded that the outer core probably contains a large amount of dissolved FeO and that oxygen is probably the principal light element in the outer core.

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