| 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. |
| Autunite | Fluorite | Gypsum | Leydetite | Marcasite | None | Pyrite | Zippeite |
| Autunite (*) | Deliensite (*) | Fluorite (*) | Gypsum (*) | Leydetite (*) |
| Marcasite (*) | Natrozippeite (*) | Pyrite (*) | Uraninite (*) | Uranopilite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Autunite (*) | Autunite | Ca(UO2)2(PO4)2·10-12H2O | 290 | 270 | 1 | 56336 | 1272 |
| Deliensite (*) | None | Fe2+(UO2)2(SO4)2(OH)2·7H2O | 290 | 270 | 1 | 56336 | 14 |
| Fluorite (*) | Fluorite | CaF2 | 290 | 210 | 1 | 56336 | 9617 |
| Gypsum (*) | Gypsum | Ca(SO4)·2H2O | 290 | 210 | 1 | 56336 | 6890 |
| Leydetite (*) | Leydetite | Fe(UO2)(SO4)2·11H2O | 290 | 270 | 1 | 56336 | 3 |
| Marcasite (*) | Marcasite | FeS2 | 290 | 210 | 1 | 56336 | 5674 |
| Natrozippeite (*) | Zippeite | Na5(UO2)8(SO4)4O5(OH)3·12H2O | 290 | 270 | 1 | 56336 | 41 |
| Pyrite (*) | Pyrite | FeS2 | 290 | 210 | 1 | 56336 | 39462 |
| Uraninite (*) | Fluorite | UO2 | 290 | 270 | 1 | 56336 | 2718 |
| Uranopilite (*) | None | (UO2)6(SO4)O2(OH)6·14H2O | 290 | 270 | 1 | 56336 | 94 |
| Age ID | Locality Notes |
|---|---|
| Giersdorf_00000658 | The L'Ecarpière locality is found within the Mortagne mining district. The mine is responsible for the production of 3120 tons of Uraniium metal. It is part of the Armorican Massif. |
| Giersdorf_00000658a | The L'Ecarpière locality is found within the Mortagne mining district. The mine is responsible for the production of 3120 tons of Uraniium metal. It is part of the Armorican Massif. |
| 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_00000658 | 290 | 270 | 290-270 | U-Pb | The age of mineralization being post-cooling of the 300-340 Ma granite bodies restricts the formation of the Uranium minerals to being genetically derived. | U | 19663 | L'Ecarpière, Gétigné, Loire-Atlantique, Pays De La Loire, France | L'Ecarpière | Chauris et al. (1994) | PMGFRA_243 | Age of the uranium mineralization in the Armorican Massif is associated with Hercynian peraluminous granites. From pg. 262: "The precise chronology of these mineralizations is not well established. The uranium veins appear to be the oldest (290-270 Ma by U/Pb dating) but underwent late remobilization processes." | |||||||||
| Giersdorf_00000658a | 230 | 210 | 230-210 | K-Ar | The age of mineralization being post-cooling of the 300-340 Ma granite bodies restricts the formation of the Uranium minerals to being genetically derived. | Pb, Zn | 19663 | L'Ecarpière, Gétigné, Loire-Atlantique, Pays De La Loire, France | L'Ecarpière | Chauris et al. (1994) | PMGFRA_243 | from pg 262: "The lead-zinc veins (230-210 Ma, K-Ar dating) seem to be the youngest and the antimony veins are of intermediate age" |
| Sample | Source Locality | Reference URL |
|---|---|---|
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