| 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. |
| Calcite | None |
| Colemanite (*) | Niter (*) | Nitratine (*) | Probertite (*) | Ulexite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Colemanite (*) | None | CaB3O4(OH)3·H2O | 0 | 144 | |||
| Niter (*) | None | K(NO3) | 0 | 181 | |||
| Nitratine (*) | Calcite | Na(NO3) | 0 | 91 | |||
| Probertite (*) | None | NaCaB5O7(OH)4·3H2O | 0 | 29 | |||
| Ulexite (*) | None | NaCaB5O6(OH)6·5H2O | 0 | 160 |
All locality data graciously provided by mindat.org
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