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. |
Chlorite | Clay | Copper | Garnet | None | Quartz | Spinel | Talc |
Clinochlore (*) | Gold (*) | Magnesiochromite (*) | Quartz (*) | Talc (*) |
Uvarovite (*) |
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 |
---|---|---|---|---|---|---|---|
Clinochlore (*) | Chlorite Clay | Mg5Al(AlSi3O10)(OH)8 | 388 | 388 | 0 | 1756 | |
Gold (*) | Copper | Au | 388 | 388 | 0 | 30554 | |
Magnesiochromite (*) | Spinel | MgCr2O4 | 388 | 388 | 0 | 311 | |
Quartz (*) | Quartz | SiO2 | 388 | 388 | 0 | 61156 | |
Talc (*) | Clay Talc | Mg3Si4O10(OH)2 | 388 | 388 | 0 | 3337 | |
Uvarovite (*) | Garnet | Ca3Cr2(SiO4)3 | 388 | 388 | 0 | 212 |
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 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
podchrome-00189 | 388 | 388 | pre-Early Devonian-Jurassic (388±17 Ma U-Pb zircon from felsic igneous rocks; 174 Ma K-Ar white mica from blueschists) | Cr | 93512 | Oxford Mine (Oxford Mine And Mill; Oxford Lease And Mill; Becky; Case And Myers; Mt. Holly; Gold Bluff; Good Hope; Good Hope Extension No. 2; Jefferson No. 2 Claim; Milton Claim), Downieville, Downieville District, Sierra Co., California, USA | Oxford Pit 1 | Moiser et al. (2012) | USGSSIR2012_5157 |
Sample | Source Locality | Reference URL |
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All locality data graciously provided by mindat.org
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