| 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. |
| Millerite | Nickeline | None | Pentlandite | Pyrite | Spinel | Ullmannite |
| Chromite (*) | Irarsite (*) | Laurite (*) | Magnetite (*) | Maucherite (*) |
| Michenerite (*) | Millerite (*) | Gersdorffite-Pa3 (*) | Pentlandite (*) | Pyrite (*) |
| Pyrrhotite (*) | Sobolevskite (*) | Sperrylite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Chromite (*) | Spinel | Fe2+Cr2O4 | 0 | 3902 | |||
| Irarsite (*) | Pyrite | IrAsS | 0 | 154 | |||
| Laurite (*) | Pyrite | RuS2 | 0 | 226 | |||
| Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 0 | 14899 | |||
| Maucherite (*) | None | Ni11As8 | 0 | 161 | |||
| Michenerite (*) | Ullmannite | PdBiTe | 0 | 114 | |||
| Millerite (*) | Millerite | NiS | 0 | 1066 | |||
| Gersdorffite-Pa3 (*) | Pyrite | NiAsS | 0 | 767 | |||
| Pentlandite (*) | Pentlandite | (Ni,Fe)9S8 | 0 | 1512 | |||
| Pyrite (*) | Pyrite | FeS2 | 0 | 39462 | |||
| Pyrrhotite (*) | Nickeline | Fe7S8 | 0 | 9056 | |||
| Sobolevskite (*) | Nickeline | PdBi | 0 | 44 | |||
| Sperrylite (*) | Pyrite | PtAs2 | 0 | 337 |
All locality data graciously provided by mindat.org
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