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. |
Alunite | Amorphous | Clay | None | Smectite-vermiculite |
Jarosite (*) | Opal (*) | Vermiculite (*) |
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 |
---|---|---|---|---|---|---|---|
Jarosite (*) | Alunite | KFe3+3(SO4)2(OH)6 | 21.2 | 20.2 | 1 | 238618 | 2228 |
Opal (*) | Amorphous | SiO2·nH2O | 1 | 238620 | 2994 | ||
Vermiculite (*) | Clay Smectite-vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O | 21.2 | 20.2 | 0 | 652 |
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_00000408 | 21.2 | 20.2 | 20.7±0.5 | K-Ar | UAKA-75-06 | 64597 | Whitmore Mine, Mormon Mountains District, Mormon Mts, Lincoln Co., Nevada, USA | Rox Quad. | Shafiqullah et al. (1980) | AGSD12_201 |
Sample | Source Locality | Reference URL |
---|---|---|
All locality data graciously provided by mindat.org
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