| 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. |
| Corundum | Milarite | None | Pseudobrookite | Spinel | Tridymite |
| Hematite (*) | Magnetite (*) | Nepheline (*) | Pseudobrookite (*) | Roedderite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Hematite (*) | Corundum | Fe2O3 | 1 | 51275 | 14640 | ||
| Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 1 | 51275 | 14899 | ||
| Nepheline (*) | Tridymite | Na3K(Al4Si4O16) | 1 | 51275 | 884 | ||
| Pseudobrookite (*) | Pseudobrookite | (Fe3+2Ti)O5 | 1 | 51275 | 164 | ||
| Roedderite (*) | Milarite | KNaMg2(Mg3Si12)O30 | 1 | 51275 | 30 |
All locality data graciously provided by mindat.org
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