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. |
None | Zircon |
Coffinite (*) | Doloresite (*) |
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 |
---|---|---|---|---|---|---|---|
Coffinite (*) | Zircon | U(SiO4)·nH2O | 106 | 90 | 0 | 566 | |
Doloresite (*) | None | V4+3O4(OH)4 | 106 | 90 | 0 | 23 |
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 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Giersdorf_00000620 | 90 | 90 | 90 | 238U-206U | Age is applied to the primary U minerals at this locality | coffinite | SS120 | Coffinite | Coffinite | 115736 | Black Mama (Peaches Black Mama), Tenderfoot Mesa, Uravan District, Mesa Co., Colorado, USA | Black Mama Mine | Miller et al. (1963) | 10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2 | GSAB74_609 | U238-Pb206 Age given by the USGS for the Morrison Formation found at the Black Mama Mine | |||||
Giersdorf_00000621 | 106 | 106 | 106 | 235U-207Pb | Age is applied to the primary U minerals at this locality | coffinite | SS120 | Coffinite | Coffinite | 115736 | Black Mama (Peaches Black Mama), Tenderfoot Mesa, Uravan District, Mesa Co., Colorado, USA | Black Mama Mine | Miller et al. (1963) | 10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2 | GSAB74_609 | U235-Pb207 Age given by the USGS for the Morrison Formation found at the Black Mama Mine | |||||
Giersdorf_00000622 | 450 | 450 | 450 | 207Pb-206Pb | The Pb207-Pb206 age given for these samples is described as being highly erroneous due to the systematic sensitivity of the analytic methods | low | coffinite | SS120 | Coffinite | Coffinite | 115736 | Black Mama (Peaches Black Mama), Tenderfoot Mesa, Uravan District, Mesa Co., Colorado, USA | Black Mama Mine | Miller et al. (1963) | 10.1130/0016-7606(1963)74[609:IEOTOO]2.0.CO;2 | GSAB74_609 | Pb207-Pb206 Age given by the USGS for the Morrison Formation found at the Black Mama Mine |
Sample | Source Locality | Reference URL |
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