| 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 | Amorphous | Calcite | Clay | Diaspore | None | Pyroxene | Quartz | Rutile | Smectite-vermiculite |
| Tridymite |
| Calcite (*) | Enstatite (*) | Goethite (*) | Jarosite (*) | Nontronite (*) |
| Opal (*) | Pyrolusite (*) | Quartz (*) | 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 |
|---|---|---|---|---|---|---|---|
| Calcite (*) | Calcite | Ca(CO3) | 0 | 27770 | |||
| Enstatite (*) | Pyroxene | Mg2Si2O6 | 0 | 944 | |||
| Goethite (*) | Diaspore | FeO(OH) | 0 | 7437 | |||
| Jarosite (*) | Alunite | KFe3+3(SO4)2(OH)6 | 0 | 2228 | |||
| Nontronite (*) | Clay Smectite-vermiculite | Na0.3Fe3+2(Si,Al)4O10(OH)2·nH2O | 0 | 471 | |||
| Opal (*) | Amorphous | SiO2·nH2O | 0 | 2994 | |||
| Pyrolusite (*) | Rutile | MnO2 | 0 | 3106 | |||
| Quartz (*) | Quartz | SiO2 | 0 | 61156 | |||
| Tridymite (*) | Tridymite | SiO2 | 0 | 458 |
All locality data graciously provided by mindat.org
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