| 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. |
| Andalusite | Beryl | Dumortierite | Garnet | None | Tourmaline |
| Almandine (*) | Andalusite (*) | Beryl (*) | Cordierite (*) | Dumortierite (*) |
| Romanèchite (*) | Schorl (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Almandine (*) | Garnet | Fe2+3Al2(SiO4)3 | 1 | 71225 | 2353 | ||
| Andalusite (*) | Andalusite | Al2SiO5 | 1 | 71225 | 1310 | ||
| Beryl (*) | Beryl | Be3Al2Si6O18 | 1 | 71225 | 4286 | ||
| Cordierite (*) | Beryl | Mg2Al4Si5O18 | 1 | 71225 | 1008 | ||
| Dumortierite (*) | Dumortierite | AlAl6BSi3O18 | 1 | 71225 | 231 | ||
| Romanèchite (*) | None | (Ba,H2O)2(Mn4+,Mn3+)5O10 | 1 | 71225 | 312 | ||
| Schorl (*) | Tourmaline | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) | 1 | 71225 | 2705 |
All locality data graciously provided by mindat.org
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