| 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. |
| Alunite | Amphibole | Cerite | Coronadite | Corundum | Nickeline | None | Pentlandite | Pyroxene | Spinel |
| Akaganeite (*) | Augite (*) | Chromite (*) | Ilmenite (*) | Jarosite (*) |
| Kaersutite (*) | Merrillite (*) | Pentlandite (*) | Pigeonite (*) | Pyrrhotite (*) |
| Spinel (*) | Ulvöspinel (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Akaganeite (*) | Coronadite | (Fe3+,Ni2+)8(OH,O)16Cl1.25·nH2O | 0 | 63 | |||
| Augite (*) | Pyroxene | (Ca,Mg,Fe)2Si2O6 | 0 | 2060 | |||
| Chromite (*) | Spinel | Fe2+Cr2O4 | 0 | 3902 | |||
| Ilmenite (*) | Corundum | Fe2+Ti4+O3 | 0 | 5433 | |||
| Jarosite (*) | Alunite | KFe3+3(SO4)2(OH)6 | 0 | 2228 | |||
| Kaersutite (*) | Amphibole | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 | 0 | 179 | |||
| Merrillite (*) | Cerite | Ca9NaMg(PO4)7 | 0 | 230 | |||
| Pentlandite (*) | Pentlandite | (Ni,Fe)9S8 | 0 | 1512 | |||
| Pigeonite (*) | Pyroxene | (Mg,Fe,Ca)2Si2O6 | 0 | 303 | |||
| Pyrrhotite (*) | Nickeline | Fe7S8 | 0 | 9056 | |||
| Spinel (*) | Spinel | MgAl2O4 | 0 | 1934 | |||
| Ulvöspinel (*) | Spinel | Fe2+2TiO4 | 0 | 120 |
All locality data graciously provided by mindat.org
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