Does iron (II) sulfide have a high melting point? Why or why not?

This site reports the melting point of ##FeS## as ##1188## ##""^@C##.

This melting point is reasonably high for an ionic species; as we would expect given the ##2+##, ##2-## charges on each of the ions. Clearly, the sulfide is non-molecular, which accounts for the high melting point. We should, however, make the comparison with ##FeO##, which is congeneric with the sulfide. This site reports the melting point as ##1377## ##""^@C##. Why do you think the melting point of the oxide is greater?