Material Index
| Name | Formula | Classifications | Members | Image | Lines | Spectra | Techniques | Tags |
|---|---|---|---|---|---|---|---|---|
| Kanonaite | MnIIIAlOSiO4 | Andalusite (subgroup) | — | 0 | 0 | — | Mineral, Aluminosilicate | |
| Kaolinite | Al2Si2O5(OH)4 | Kaolinite (subgroup) | — | 12 | 1 | Reflectance | Mineral, Aluminosilicate , Hydroxide | |
| Kaolinite (subgroup) | Al2Si2O5(OH)4 | Kaolinite-Serpentine Group | Nacrite, Halloysite, Kaolinite, Dickite | 5 | 0 | — | Hydroxide, Aluminosilicate , Subgroup | |
| Kaolinite-Serpentine Group | — | — | Odinite, Kaolinite (subgroup), Greenalite, Manandonite, Serpentine (subgroup) | 0 | 0 | — | Group , Hydroxide , Silicate | |
| Kapitsaite-(Y) | Ba4Y2Si8B4O28F | Hyalotekite (group) | — | 6 | 0 | — | Mineral, Borosilicate | |
| Karelianite | V2O3 | Hematite (group) | — | 0 | 0 | — | Mineral, Simple oxide | |
| Karpatite | C24H12 | — | — | 0 | 0 | — | Organic | |
| Keilite | FeS | — | — | 0 | 0 | — | Mineral, Sulphide | |
| Keldyshite | Na2-xHxZrSi2O7·n(H2O) | — | — | 1 | 0 | — | Mineral, Silicate , Hydrated | |
| Kellyite | (MnII,Mg,Al)3(Si,Al)2O5(OH)4 | Serpentine (subgroup) | — | 0 | 0 | — | Mineral, Aluminosilicate , Hydroxide | |
| Kenoplumbomicrolite | (Pb,☐)2Ta2O6[☐,(OH),O] | Microlite (group) | — | 0 | 0 | — | Mineral, Hydroxide | |
| Keplerite | Ca9(Ca0.5☐0.5)Mg(PO4)7 | Merrillite (subgroup) | — | 0 | 0 | — | Mineral, Orthophosphate , Phosphate | |
| Khibinskite | K2ZrSi2O7 | — | — | 3 | 0 | — | Mineral, Silicate | |
| Khvorovite | Pb4Ca2[Si8B2(SiB)O28]F | Hyalotekite (group) | — | 0 | 0 | — | Mineral, Halide , Borosilicate | |
| Kintoreite | PbFeIII3(PO4)(PO3OH)(OH)6 | Plumbogummite (group) | — | 0 | 0 | — | Mineral, Hydroxide , Orthophosphate , Phosphate |
