Iron sulphides

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

Natural minerals    Edit 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