| 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. |
| Clay | Corundum | Cristobalite | Mica | Natrolite | None | Olivine | Pyroxene | Spinel | Tridymite |
| Cristobalite (*) | Enstatite (*) | Fayalite (*) | Hematite (*) | Magnetite (*) |
| Natrolite (*) | Phlogopite (*) | 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 |
|---|---|---|---|---|---|---|---|
| Cristobalite (*) | Cristobalite | SiO2 | 0 | 453 | |||
| Enstatite (*) | Pyroxene | Mg2Si2O6 | 0 | 944 | |||
| Fayalite (*) | Olivine | Fe2+2(SiO4) | 0 | 371 | |||
| Hematite (*) | Corundum | Fe2O3 | 0 | 14640 | |||
| Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 0 | 14899 | |||
| Natrolite (*) | Natrolite | Na2(Si3Al2)O10·2H2O | 0 | 1236 | |||
| Phlogopite (*) | Mica Clay | KMg3(AlSi3O10)(OH)2 | 0 | 2273 | |||
| Tridymite (*) | Tridymite | SiO2 | 0 | 458 |
All locality data graciously provided by mindat.org
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