| 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 | Coronadite | Epsomite | Gypsum | Halotrichite | Hexahydrite | Metavoltine | None | Not in a structural group | Pyrite |
| Rocksalt | Tamarugite |
| Alunogen (*) | Epsomite (*) | Gypsum (*) | Halite (*) | Halotrichite (*) |
| Hexahydrite (*) | Metavoltine (*) | Natrojarosite (*) | Pickeringite (*) | Pyrite (*) |
| Redingtonite (*) | Schwertmannite (*) | Sideronatrite (*) | Tamarugite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Alunogen (*) | Not in a structural group | Al2(SO4)3(H2O)12·5H2O | 2 | 12467,12476 | 272 | ||
| Epsomite (*) | Epsomite | Mg(SO4)·7H2O | 1 | 12467 | 484 | ||
| Gypsum (*) | Gypsum | Ca(SO4)·2H2O | 5 | 12470,12471,12474,12476,12480 | 6890 | ||
| Halite (*) | Rocksalt | NaCl | 1 | 12473 | 1398 | ||
| Halotrichite (*) | Halotrichite | Fe2+Al2(SO4)4·22H2O | 1 | 12467 | 409 | ||
| Hexahydrite (*) | Hexahydrite | Mg(SO4)·6H2O | 2 | 12467,12476 | 251 | ||
| Metavoltine (*) | Metavoltine | K2Na6Fe2+Fe3+6O2(SO4)12·18H2O | 1 | 12476 | 78 | ||
| Natrojarosite (*) | Alunite | NaFe3+3(SO4)2(OH)6 | 2 | 12466,12476 | 254 | ||
| Pickeringite (*) | Halotrichite | MgAl2(SO4)4·22H2O | 1 | 12467 | 265 | ||
| Pyrite (*) | Pyrite | FeS2 | 2 | 12467,12476 | 39462 | ||
| Redingtonite (*) | Halotrichite | Fe2+Cr2(SO4)4·22H2O | 1 | 12467 | 2 | ||
| Schwertmannite (*) | Coronadite | Fe3+16O16(OH)9.6(SO4)3.2·10H2O | 1 | 12467 | 37 | ||
| Sideronatrite (*) | None | Na2Fe3+(SO4)2(OH)·3H2O | 3 | 12466,12467,12478 | 73 | ||
| Tamarugite (*) | Tamarugite | NaAl(SO4)2·6H2O | 3 | 12466,12467,12478 | 87 |
All locality data graciously provided by mindat.org
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