| 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 |
|---|---|---|---|---|---|---|---|---|---|
| NAVDAT-20386 | 5.3 | 1.8 | 81030 | Grayson And Spurgeon Cement And Gravel Mine, Little Fredonyer, Lassen Co., California, USA | NAVDAT | NAVDAT | |||
| NAVDAT-20387 | 1.8 | 0.01 | 81030 | Grayson And Spurgeon Cement And Gravel Mine, Little Fredonyer, Lassen Co., California, USA | NAVDAT | NAVDAT |