| 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 | Chalcanthite | Coronadite | Corundum | Cristobalite | Gypsum | Halotrichite | None | Not in a structural group | Quartz |
| Sulphur | Tridymite |
| Akaganeite (*) | Alunite (*) | Alunogen (*) | Anhydrite (*) | Chalcanthite (*) |
| Cristobalite (*) | Gypsum (*) | Halotrichite (*) | Hematite (*) | Jarosite (*) |
| Natroalunite (*) | Quartz (*) | Sulphur (*) | Tridymite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Akaganeite (*) | Coronadite | (Fe3+,Ni2+)8(OH,O)16Cl1.25·nH2O | 0 | 63 | |||
| Alunite (*) | None | KAl3(SO4)2(OH)6 | 0 | 966 | |||
| Alunogen (*) | Not in a structural group | Al2(SO4)3(H2O)12·5H2O | 0 | 272 | |||
| Anhydrite (*) | Not in a structural group | Ca(SO4) | 0 | 1588 | |||
| Chalcanthite (*) | Chalcanthite | Cu(SO4)·5H2O | 0 | 925 | |||
| Cristobalite (*) | Cristobalite | SiO2 | 0 | 453 | |||
| Gypsum (*) | Gypsum | Ca(SO4)·2H2O | 0 | 6890 | |||
| Halotrichite (*) | Halotrichite | Fe2+Al2(SO4)4·22H2O | 0 | 409 | |||
| Hematite (*) | Corundum | Fe2O3 | 0 | 14640 | |||
| Jarosite (*) | Alunite | KFe3+3(SO4)2(OH)6 | 0 | 2228 | |||
| Natroalunite (*) | Alunite | NaAl3(SO4)2(OH)6 | 0 | 128 | |||
| Quartz (*) | Quartz | SiO2 | 0 | 61156 | |||
| Sulphur (*) | Sulphur | S | 0 | 2045 | |||
| Tridymite (*) | Tridymite | SiO2 | 0 | 458 |
All locality data graciously provided by mindat.org
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