| 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 | Coronadite | Corundum | Cristobalite | Nickeline | None | Not in a structural group | Olivine | Pyroxene |
| Quartz | Rhabdophane | Spinel | Tridymite |
| Akaganeite (*) | Anhydrite (*) | Augite (*) | Bassanite (*) | Cristobalite (*) |
| Forsterite (*) | Hematite (*) | Ilmenite (*) | Jarosite (*) | Magnetite (*) |
| Opal (*) | Pigeonite (*) | Pyrrhotite (*) | 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 |
|---|---|---|---|---|---|---|---|
| Akaganeite (*) | Coronadite | (Fe3+,Ni2+)8(OH,O)16Cl1.25·nH2O | 1 | 80308 | 63 | ||
| Anhydrite (*) | Not in a structural group | Ca(SO4) | 2 | 80308,80309 | 1588 | ||
| Augite (*) | Pyroxene | (Ca,Mg,Fe)2Si2O6 | 2 | 80308,80311 | 2060 | ||
| Bassanite (*) | Rhabdophane | Ca(SO4)·0.5H2O | 1 | 80308 | 82 | ||
| Cristobalite (*) | Cristobalite | SiO2 | 4 | 80304,80309,80310,80311 | 453 | ||
| Forsterite (*) | Olivine | Mg2(SiO4) | 1 | 80311 | 1188 | ||
| Hematite (*) | Corundum | Fe2O3 | 3 | 80308,80310,80311 | 14640 | ||
| Ilmenite (*) | Corundum | Fe2+Ti4+O3 | 1 | 80311 | 5433 | ||
| Jarosite (*) | Alunite | KFe3+3(SO4)2(OH)6 | 2 | 80310,80311 | 2228 | ||
| Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 2 | 80309,80311 | 14899 | ||
| Opal (*) | Amorphous | SiO2·nH2O | 1 | 80304 | 2994 | ||
| Pigeonite (*) | Pyroxene | (Mg,Fe,Ca)2Si2O6 | 2 | 80308,80311 | 303 | ||
| Pyrrhotite (*) | Nickeline | Fe7S8 | 1 | 80308 | 9056 | ||
| Quartz (*) | Quartz | SiO2 | 3 | 80308,80310,80311 | 61156 | ||
| Tridymite (*) | Tridymite | SiO2 | 2 | 80304,80309 | 458 |
All locality data graciously provided by mindat.org
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