| 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. |
| Amorphous | Calcite | Coronadite | Diaspore | Marcasite | None | Pyrite | Quartz | Rutile |
| Cryptomelane (*) | Goethite (*) | Marcasite (*) | Opal (*) | Pyrite (*) |
| Pyrolusite (*) | Quartz (*) | Rhodochrosite (*) | Romanèchite (*) | Todorokite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Cryptomelane (*) | Coronadite | K(Mn4+7Mn3+)O16 | 0 | 599 | |||
| Goethite (*) | Diaspore | FeO(OH) | 0 | 7437 | |||
| Marcasite (*) | Marcasite | FeS2 | 0 | 5674 | |||
| Opal (*) | Amorphous | SiO2·nH2O | 0 | 2994 | |||
| Pyrite (*) | Pyrite | FeS2 | 0 | 39462 | |||
| Pyrolusite (*) | Rutile | MnO2 | 0 | 3106 | |||
| Quartz (*) | Quartz | SiO2 | 0 | 61156 | |||
| Rhodochrosite (*) | Calcite | Mn(CO3) | 0 | 1711 | |||
| Romanèchite (*) | None | (Ba,H2O)2(Mn4+,Mn3+)5O10 | 0 | 312 | |||
| Todorokite (*) | None | (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O | 0 | 433 |
All locality data graciously provided by mindat.org
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