| 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. |
| Allanite | Apatite | Autunite | Beryl | Brochantite | Clay | Columbite | Epidote | Feldspar | Fluorite |
| Gadolinite | Garnet | Meta-autunite | Mica | None | Not in a structural group | Pyrochlore | Quartz | Spinel | Stibnite |
| Tapiolite | Topaz | 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 | |
| Allanite-(Ce) (*) | Allanite Epidote | CaCe(Al2Fe2+)[Si2O7][SiO4]O(OH) | 274 | 272 | 0 | 706 | |
| 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 | |
| Bertrandite (*) | Not in a structural group | Be4Si2O7(OH)2 | 274 | 272 | 0 | 606 | |
| Beryl (*) | Beryl | Be3Al2Si6O18 | 274 | 272 | 0 | 4286 | |
| Bismuthinite (*) | Stibnite | Bi2S3 | 274 | 272 | 0 | 1935 | |
| Brochantite (*) | Brochantite | Cu4(SO4)(OH)6 | 274 | 272 | 0 | 1633 | |
| Columbite-(Fe) (*) | Columbite | Fe2+Nb2O6 | 274 | 272 | 0 | 518 | |
| Columbite-(Mn) (*) | Columbite | Mn2+Nb2O6 | 274 | 272 | 0 | 289 | |
| Elbaite (*) | Tourmaline | Na(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH) | 274 | 272 | 0 | 520 | |
| Fluorapatite (*) | Apatite | Ca5(PO4)3F | 274 | 272 | 0 | 2740 | |
| Foitite (*) | Tourmaline | (Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH) | 274 | 272 | 0 | 75 | |
| Gahnite (*) | Spinel | ZnAl2O4 | 274 | 272 | 0 | 445 | |
| Hydroxycalciomicrolite (*) | Pyrochlore | Ca1.5Ta2O6(OH) | 274 | 272 | 0 | 10 | |
| Hydroxylherderite (*) | Gadolinite | CaBe(PO4)(OH) | 274 | 272 | 0 | 119 | |
| Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 274 | 272 | 0 | 14899 | |
| 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 | |
| Muscovite (*) | Mica Clay | KAl2(Si3Al)O10(OH)2 | 274 | 272 | 0 | 17380 | |
| Quartz (*) | Quartz | SiO2 | 274 | 272 | 0 | 61156 | |
| Stibiotantalite (*) | None | Sb3+TaO4 | 274 | 272 | 0 | 53 | |
| Tantalite-(Mn) (*) | Columbite | Mn2+Ta2O6 | 274 | 272 | 0 | 211 | |
| Tapiolite-(Fe) (*) | Tapiolite | Fe2+Ta2O6 | 274 | 272 | 0 | 88 | |
| Topaz (*) | Topaz | Al2SiO4F2 | 274 | 272 | 0 | 1476 | |
| Torbernite (*) | None | Cu(UO2)2(PO4)2·12H2O | 274 | 272 | 0 | 1059 | |
| Uraninite (*) | Fluorite | UO2 | 274 | 272 | 0 | 2718 | |
| 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_091 | 274 | 272 | 273±1 | U/Pb | monazite | Yes | 5949 | Standpipe Hill Quarries, Topsham, Sagadahoc Co., Maine, USA | Topsham - E Standpipe | McCauley and Bradley (2014) | 10.3749/canmin.52.2.183 | CM52_183 |
All locality data graciously provided by mindat.org
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