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| 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. |
| Chalcopyrite | Clay | Clinozoisite | Copper | Corundum | Epidote | Melonite | Mica | Molybdenite | Nickeline |
| None | Pyrite | Quartz | Sphalerite | Spinel |
| Chalcopyrite (*) | Coloradoite (*) | Epidote (*) | Gold (*) | Hematite (*) |
| Hessite (*) | Magnetite (*) | Molybdenite (*) | Muscovite (*) | Petzite (*) |
| Pyrite (*) | Pyrrhotite (*) | Quartz (*) | Sphalerite (*) | Sylvanite (*) |
| 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 |
|---|---|---|---|---|---|---|---|
| Chalcopyrite (*) | Chalcopyrite | CuFeS2 | 1886 | 1886 | 0 | 27198 | |
| Coloradoite (*) | Sphalerite | HgTe | 1886 | 1886 | 0 | 169 | |
| Epidote (*) | Epidote Clinozoisite | Ca2(Al2Fe3+)[Si2O7][SiO4]O(OH) | 1886 | 1886 | 0 | 8173 | |
| Gold (*) | Copper | Au | 1902 | 1873 | 0 | 30554 | |
| Hematite (*) | Corundum | Fe2O3 | 1886 | 1886 | 0 | 14640 | |
| Hessite (*) | None | Ag2Te | 1886 | 1886 | 0 | 804 | |
| Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 1886 | 1886 | 0 | 14899 | |
| Molybdenite (*) | Molybdenite | MoS2 | 1886 | 1886 | 0 | 5800 | |
| Muscovite (*) | Mica Clay | KAl2(Si3Al)O10(OH)2 | 1902 | 1873 | 0 | 17380 | |
| Petzite (*) | None | Ag3AuTe2 | 1886 | 1886 | 0 | 409 | |
| Pyrite (*) | Pyrite | FeS2 | 1886 | 1886 | 0 | 39462 | |
| Pyrrhotite (*) | Nickeline | Fe7S8 | 1902 | 1873 | 0 | 9056 | |
| Quartz (*) | Quartz | SiO2 | 1902 | 1873 | 0 | 61156 | |
| Sphalerite (*) | Sphalerite | ZnS | 1886 | 1886 | 0 | 21482 | |
| Sylvanite (*) | Melonite | AgAuTe4 | 1886 | 1886 | 0 | 337 |
| Age ID | Locality Notes |
|---|---|
| Giersdorf_00000492 | The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district. |
| Giersdorf_00000493 | The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district. |
| Giersdorf_00000494 | The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district. |
| Giersdorf_00000495 | The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district. |
| Giersdorf_00000496 | The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district. |
| Giersdorf_00000497 | The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district. |
| Giersdorf_00000498 | The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district. |
| Giersdorf_00000515 | The Boliden area consists of volcanic rocks with an epigenetic gold source, and is part of the Skellefte Mining District. |
| 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_00000517 | 1802 | 1794 | 1798 | 91019 | Yes | Titanite | 304392 | Skellefteå, Västerbotten County, Sweden | Skellefte | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| MD29_150_Skellefte | 1900 | 1870 | 1870-1900 | U-Pb | Yes | 23797 | Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Skellefte mining district | Hallberg (1994) | 10.1007/BF00191512 | MD29_150 | U-Pb zircon dating of volcanic rocks and early orogenic intrusives in the Los, Bergslagen, and Skellefte districts yields ages of 1.87-1.90 Ga (Welin et al, 1980, Åberg et al. 1984; Åberg and Strömberg 1984; Wilson et al. 1985; Welin 1987; Claesson and Lundqvist 1990). Dating ofvo1canic rocks in central and southern Finland have also yielded U-Pb zircon ages of 1.87-1.90 Ga (Ah o 1979; Helovuori 1979; Patchett and Kouvo 1986; Welin 1987). This indicates that deposition of vo1canic rocks occurred over a time interval of about 30 M yrs in the central part of the Baltic Shield. | |||||||||
| Giersdorf_00000516 | 1870 | 1870 | 1870 | U-Pb | 94002 | Yes | Zircon | 10632 | Åkerberg Mine, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Åkerberg Mine | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | ||||||||
| Giersdorf_00000515 | 1870 | 1870 | 1870 | U-Pb | Age is suspected to be approximately 1870 Ma, during which an extensional period of tectonic activity weakened the mantle and provided access for heavier materials to ascend upwards | bh 428 | Yes | Zircon | 207492 | Boliden, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Boliden area | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||
| Giersdorf_00000492 | 1890 | 1890 | 1890 | U-Pb | 91016 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Melestjärn mass flow | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| Giersdorf_00000493 | 1890 | 1890 | 1902 | U-Pb | 91016 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Melestjärn mass flow | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| Giersdorf_00000494 | 1890 | 1890 | 1902 | U-Pb | 91016 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Melestjärn mass flow | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| Giersdorf_00000495 | 1902 | 1902 | 1902 | U-Pb | 91016 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Melestjärn mass flow | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| Giersdorf_00000496 | 1884 | 1884 | 1884 | U-Pb | 91016 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Melestjärn mass flow | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| Giersdorf_00000497 | 1873 | 1873 | 1873 | U-Pb | 91016 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Melestjärn mass flow | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| Giersdorf_00000498 | 1893 | 1884.6 | 1888.8±4.2 | U-Pb | high | 91016 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Melestjärn mass flow | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | Intercept age for the Pb206/207 concordia | |||||||
| Giersdorf_00000518 | 1885 | 1885 | 1885 | U-Pb | 91066 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Tallberg Deposit | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| Giersdorf_00000519 | 1885 | 1885 | 1885 | U-Pb | 91065 | Zircon | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Tallberg Deposit | Billstrom et al. (1996) | 10.2113/gsecongeo.91.6.1054 | EG91_1054 | |||||||||
| PorphCu-00092 | 1886 | 1886 | probably Laramide | Chalcopyrite, Coloradoite, Epidote, Hematite, Hessite, Magnetite, Molybdenite, Petzite, Pyrite, Sphalerite, Sylvanite, Electrum | Cu | 33241 | Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden | Tallberg | Singer et al. (2008) | USGSOFR2008_1155 |
| Sample | Source Locality | Reference URL |
|---|---|---|
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