What question did this study set out to answer?

This research aims to understand how high pressure influences phase relationships between iron and nickel sulfides.

PHASE RELATIONSHIPS BETWEEN SULFIDE MINERALS OF IRON AND NICKEL AT 6 GPa AND 900 °C

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Investigates high-pressure phase relationships of iron and nickel sulfides, suggesting implications for metal migration in the mantle.

This research aims to understand how high pressure influences phase relationships between iron and nickel sulfides.
Used a high-pressure 'anvil-pit-to-roid' apparatus to conduct experiments at 6 GPa and 900 °C.
Analyzed phase equilibria in the Fe-Ni-S system with sulfur content less than 50 atomic percent.
Examined the stability of solid solutions and various nickel-rich sulfide phases under high-pressure conditions.
Solid solution (Fe, Ni)1-xS stable across the composition range investigated.
Ni-richer pyrrhotite coexists with the melt and is stable under specific nickel contents.
Pentlandite is not stable in the tested pressure and temperature conditions, indicating a shift in phase relationships.

Leontievskii et al. (1992) studied this question.

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