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Iron sulfide

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

Contents

Natural minerals

By increasing order of stability:

  • Iron(II) sulfide, FeS, the less stable amorphous form;
  • Greigite, a form of iron(II,III) sulfide (Fe3S4), analog to magnetite, Fe3O4;
  • Pyrrhotite, Fe1−xS (where x = 0 to 0.2), or Fe7S8;
  • Troilite, FeS, the endmember of pyrrhotite;
  • Mackinawite, Fe1+xS (where x = 0 to 0.1);
  • Marcasite, or iron(II) disulfide, FeS2 (orthorhombic);
  • Pyrite, or iron(II) disulfide, FeS2 (cubic), the more stable endmember, known as fool's gold.

    • Artificial product

  • Iron(III) sulfide, Fe2S3, a quite unstable artificial product synthesised at –20 °C and not identified in nature.

    • References

    Iron sulfide Wikipedia
    (Text) CC BY-SA