| Mineral Evolution DatabaseCreated and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.Mineral locality data provided by mindat.org |
| Excel ID | Max Age (Ma) | Min Age (Ma) | Dated Mineral | Minerals explicitely stated as having this age | Age applies to these Elements | Dated Locality ID | Dated Locality | Ref | Ref ID |
|---|---|---|---|---|---|---|---|---|---|
| USGS-Rb-Sr-02303 | 331.23 | 297.23 | Muscovite | 102059 | Short Tom Smith Mine (Ben Smith Mine), Rockingham Co., North Carolina, USA | USGS-Rb-Sr | USGS-Rb-Sr |