Iron sulfide

Iron sulfide or Iron sulphide can refer to range of chemical compounds composed of iron and sulfur.

Minerals

By increasing order of stability:

  • Iron(II) sulfide, FeS
  • Greigite, Fe3S4
  • Pyrrhotite, Fe1−xS (where x = 0 to 0.2)
  • Troilite, FeS, the endmember of pyrrhotite
  • Mackinawite, Fe1+xS (where x = 0 to 0.1)
  • Marcasite, orthorhombic FeS2
  • Pyrite, cubic FeS2 (fool's gold)

Synthetic
  • Iron(III) sulfide, Fe2S3
  • Iron-sulfur clusters, includes both synthetic and biological

Biological
  • Iron–sulfur protein
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