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 | Beryl | Clay | Corundum | Cristobalite | Feldspar | Gypsum | Kaolinite | Marcasite | Mica |
None | Not in a structural group | Quartz | Spinel | Tridymite |
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 |
---|---|---|---|---|---|---|---|
Alunite (*) | None | KAl3(SO4)2(OH)6 | 0 | 966 | |||
Ammonioalunite (*) | Alunite | (NH4)Al3(SO4)2(OH)6 | 0 | 11 | |||
Anatase (*) | Not in a structural group | TiO2 | 0 | 2162 | |||
Anorthite (*) | Feldspar | Ca(Al2Si2O8) | 0 | 1036 | |||
Cristobalite (*) | Cristobalite | SiO2 | 0 | 453 | |||
Gypsum (*) | Gypsum | Ca(SO4)·2H2O | 0 | 6890 | |||
Hematite (*) | Corundum | Fe2O3 | 0 | 14640 | |||
Hercynite (*) | Spinel | Fe2+Al2O4 | 0 | 407 | |||
Indialite (*) | Beryl | Mg2Al3(AlSi5)O18 | 0 | 24 | |||
Jarosite (*) | Alunite | KFe3+3(SO4)2(OH)6 | 0 | 2228 | |||
Kaolinite (*) | Clay Kaolinite | Al2Si2O5(OH)4 | 0 | 5591 | |||
Magnesioferrite (*) | Spinel | MgFe3+2O4 | 0 | 98 | |||
Marcasite (*) | Marcasite | FeS2 | 0 | 5674 | |||
Mullite (*) | None | Al4+2xSi2-2xO10-x (x ≈ 0.4) | 0 | 78 | |||
Muscovite (*) | Mica Clay | KAl2(Si3Al)O10(OH)2 | 0 | 17380 | |||
Quartz (*) | Quartz | SiO2 | 0 | 61156 | |||
Tridymite (*) | Tridymite | SiO2 | 0 | 458 |
Sample | Source Locality | Reference URL |
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All locality data graciously provided by mindat.org
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