Table T4. Chemical formulae of sulfide minerals identified during Expedition 331.
| Mineral | Composition |
|---|---|
| Pyrite | FeS2 |
| Pyrrhotite | Fe1–xS |
| Chalcopyrite | CuFeS2 |
| Covellite | CuS |
| Sphalerite | (Zn,Fe)S |
| Wurtzite | ZnS |
| Galena | PbS |
| Tennantite | (Cu,Fe,Zn.Ag)12As4S13 |
| Tetrahedrite | (Cu,Fe,Zn.Ag)12Sb4S13 |
| Sulfosalt | A class of sulfide minerals in which a semimetal (As or Sb) takes the place of one or more S atoms in the structure. Tennantite and tetrahedrite are important examples, and Pb and Ag commonly form sulfosalts. |