Material Index
| Name | Formula | Classifications | Members | Image | Lines | Spectra | Techniques | Tags |
|---|---|---|---|---|---|---|---|---|
| Sodium bromide | NaBr | — | — | 1 | 0 | — | Compound, Halide | |
| Sodium chloride | NaCl | — | — | 3 | 0 | — | Compound, Halide | |
| Sodium hydroxide | NaOH | — | — | 2 | 0 | — | Hydroxide , Compound | |
| Sodium iodide | NaI | — | — | 1 | 0 | — | Compound, Halide | |
| Sodium sulphate | Na2SO4 | — | Thenardite, Thénardite | 11 | 0 | — | Synthetic , Compound, Sulphate | |
| Sogdianite | KZr2Li3Si12O30 | Osumilite (group) | — | 1 | 0 | — | Mineral, Silicate | |
| Solongoite | Ca2B3O4(OH)4Cl | — | — | 3 | 0 | — | Mineral, Hydroxide , Borate | |
| Sonolite | MnII9(SiO4)4(OH)2 | Manganhumite (subgroup) | — | 0 | 0 | — | Mineral, Hydroxide , Silicate | |
| Sperrylite | PtAs2 | Pyrite (group) | — | 0 | 0 | — | Mineral, Arsenide | |
| Spessartine | MnII3Al2(SiO4)3 | Garnet | — | 0 | 2 | CL, EDS | Mineral, Aluminosilicate | |
| Sphalerite | ZnS | Sphalerite (group), Zinc sulphide | — | 9 | 3 | CL/SEM, SXES | Mineral, Sulphide | |
| Sphalerite (group) | — | — | Sphalerite, Coloradoite, Hawleyite, Rudashevskyite, Stilleite, Tiemannite, Metacinnabar, Ishiharaite, Browneite | 0 | 0 | — | Group | |
| Sphene | CaTiSiO5 | — | — | 0 | 0 | — | Silicate | |
| Spherocobaltite | CoCO3 | Calcite (group) | — | 0 | 0 | — | Mineral, Carbonate | |
| Spinel | MgAl2O4, (FeII,Mg)(CrIII,Al)2O4 | Spinel (subgroup) | Magalox | 20 | 3 | CL/SEM, SXES | Mineral |
