Oxidation and evaporation behavior of iron sulfide fine particles depending on oxygen fugacity

Abstract

Micrometeorites have the most abundant flux in accumulation of planetary materials to the Earth and may have environmental effect at upper atmosphere. Compositions of FeS derived melt in fine spherules are following Fe-S-O phase relations even in a few seconds. Troilite in micrometeorite is melted, oxidized and vaporized depending on oxygen fugacity.