| A | This mineral is Anthropogenic. |
| G | This mineral is directly dated. |
| B | This mineral is reported as having this age. |
| Y | This mineral is using an age reported as an element mineralization period. |
| O | This mineral is using an age calculated from all data at the locality. |
| R | The age displayed for this mineral originates from a different, non-child locality. |
| P | The age displayed for this mineral is the range of ages for this mineral at all of this locality's children. |
| This mineral's age has not yet been recorded. |
| Alunite | Clay | Gypsum | Lepidocrocite | Marcasite | None | Pyrite | Rocksalt | Smectite-vermiculite | Spinel |
| Stibnite | Sulphur |
| Clausthalite (*) | Guanajuatite (*) | Gypsum (*) | Jarosite (*) | Lepidocrocite (*) |
| Maghemite (*) | Marcasite (*) | Montmorillonite (*) | Pyrite (*) | Sulphur (*) |
| Mineral name | Structural Groups | IMA Formula | Max Age (Ma) | Min Age (Ma) | # of Sublocalities containing mineral | LOCALITY IDs, not mindat ids | # of localities containing mineral |
|---|---|---|---|---|---|---|---|
| Clausthalite (*) | Rocksalt | PbSe | 1 | 115398 | 281 | ||
| Guanajuatite (*) | Stibnite | Bi2Se3 | 1 | 115398 | 37 | ||
| Gypsum (*) | Gypsum | Ca(SO4)·2H2O | 1 | 115400 | 6890 | ||
| Jarosite (*) | Alunite | KFe3+3(SO4)2(OH)6 | 1 | 115400 | 2228 | ||
| Lepidocrocite (*) | Lepidocrocite | Fe3+O(OH) | 1 | 115416 | 581 | ||
| Maghemite (*) | Spinel | (Fe3+0.67 0.33)Fe3+2O4 | 1 | 115416 | 229 | ||
| Marcasite (*) | Marcasite | FeS2 | 1 | 115395 | 5674 | ||
| Montmorillonite (*) | Clay Smectite-vermiculite | (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O | 2 | 115404,115416 | 1508 | ||
| Pyrite (*) | Pyrite | FeS2 | 2 | 115395,115416 | 39462 | ||
| Sulphur (*) | Sulphur | S | 1 | 115400 | 2045 |
All locality data graciously provided by mindat.org
All age data...
Other copyright data...