| 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 | Apatite | Autunite | Beryl | Bismutite | Clay | Columbite | Diaspore | Feldspar | Fluorite |
| Garnet | Löllingite | Meta-autunite | Mica | Monazite | None | Quartz | Staurolite | Tapiolite | Tourmaline |
| Zircon |
| 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 |
|---|---|---|---|---|---|---|---|
| Albite (*) | Feldspar | Na(AlSi3O8) | 274 | 272 | 0 | 8803 | |
| Almandine (*) | Garnet | Fe2+3Al2(SiO4)3 | 274 | 272 | 0 | 2353 | |
| Annite (*) | Mica Clay | KFe2+3(AlSi3O10)(OH)2 | 274 | 272 | 0 | 356 | |
| Autunite (*) | Autunite | Ca(UO2)2(PO4)2·10-12H2O | 274 | 272 | 0 | 1272 | |
| Beryl (*) | Beryl | Be3Al2Si6O18 | 274 | 272 | 0 | 4286 | |
| Bismutite (*) | Bismutite | Bi2O2(CO3) | 274 | 272 | 0 | 716 | |
| Columbite-(Fe) (*) | Columbite | Fe2+Nb2O6 | 274 | 272 | 0 | 518 | |
| Fluorapatite (*) | Apatite | Ca5(PO4)3F | 274 | 272 | 0 | 2740 | |
| Goethite (*) | Diaspore | FeO(OH) | 274 | 272 | 0 | 7437 | |
| Löllingite (*) | Löllingite | FeAs2 | 274 | 272 | 0 | 762 | |
| Meta-autunite (*) | Meta-autunite | Ca(UO2)2(PO4)2·6H2O | 274 | 272 | 0 | 388 | |
| Metatorbernite (*) | None | Cu(UO2)2(PO4)2·8H2O | 274 | 272 | 0 | 443 | |
| Microcline (*) | Feldspar | K(AlSi3O8) | 274 | 272 | 0 | 4924 | |
| Monazite-(Ce) (*) | Monazite | Ce(PO4) | 274 | 272 | 0 | 945 | |
| Muscovite (*) | Mica Clay | KAl2(Si3Al)O10(OH)2 | 274 | 272 | 0 | 17380 | |
| Opal (*) | Amorphous | SiO2·nH2O | 274 | 272 | 0 | 2994 | |
| Quartz (*) | Quartz | SiO2 | 274 | 272 | 0 | 61156 | |
| Schorl (*) | Tourmaline | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) | 274 | 272 | 0 | 2705 | |
| Spessartine (*) | Garnet | Mn2+3Al2(SiO4)3 | 274 | 272 | 0 | 1214 | |
| Staurolite (*) | Staurolite | Fe2+2Al9Si4O23(OH) | 274 | 272 | 0 | 978 | |
| Tapiolite-(Fe) (*) | Tapiolite | Fe2+Ta2O6 | 274 | 272 | 0 | 88 | |
| Torbernite (*) | None | Cu(UO2)2(PO4)2·12H2O | 274 | 272 | 0 | 1059 | |
| Uraninite (*) | Fluorite | UO2 | 274 | 272 | 0 | 2718 | |
| Uranophane-α (*) | None | Ca(UO2)2(SiO3OH)2·5H2O | 274 | 272 | 0 | 890 | |
| Zircon (*) | Zircon | Zr(SiO4) | 274 | 272 | 0 | 5251 |
| Excel ID | Max Age (Ma) | Min Age (Ma) | Age as listed in reference | Dating Method | Age Interpret | Prioritized? | Sample Source | Sample Num | Run Num | Age from other Locality | Dated Mineral | Minerals explicitely stated as having this age | Age applies to these Elements | MinDat Locality ID | Dated Locality (Max Age) | Location as listed in reference | Reference | Reference DOI | Reference ID | Age Notes | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bradley_2012_069 | 274 | 272 | 273±1 | U/Pb | zircon | Yes | Zircon | 6782 | Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USA | Anderson | McCauley and Bradley (2014) | 10.3749/canmin.52.2.183 | CM52_183 |
All locality data graciously provided by mindat.org
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