| Locality type: | Mine |
| Classification |
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| Species: | Columbite-(Fe) |
| Formula: | Fe2+Nb2O6 |
| Age information |
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| Maximum recorded age: | 1082.3 ± 4.5 Ma |
| Minimum recorded age: | 1082.3 ± 4.5 Ma |
| Sample ages: | | Recorded age | Geologic Time | Sample | Dating method |
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| 1 | 1082.3 ± 4.5 Ma | Stenian | NHM Oslo 17164 | Pb-U |
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| Sample references: | |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Columbite-(Fe) data |
| Locality Data: | Click here to view Tangen Feldspar Mine, Kragerø, Telemark, Norway |
| Photo Gallery | View Gallery (5 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 688703 |
| Long-form Identifier: | 1:3:688703:2 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Columbite-(Fe) |
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| 17.8km (11.1 miles) | ⓘRamskjær Feldspar Quarry, Søndeled, Risør, Agder, Norway |
| 49.0km (30.5 miles) | ⓘHåkestad Quarry, Håkestad, Tjølling, Larvik Commune, Vestfold, Norway |
| 90.7km (56.3 miles) | ⓘEptevatnet 04 Feldspar Quarry (Hovåsen), Iveland, Agder, Norway |
| 91.5km (56.9 miles) | ⓘLandsverk, Evje og Hornnes, Agder, Norway |
| 91.6km (56.9 miles) | ⓘLandsverk 1 Feldspar Quarry (Jokeli), Landsverk, Evje og Hornnes, Agder, Norway |
| 92.0km (57.2 miles) | ⓘFossbekk Feldspar Quarry, Iveland, Agder, Norway |
| 92.2km (57.3 miles) | ⓘLjosland 03 Feldspar Quarry, Ljosland, Iveland, Agder, Norway |
| 92.2km (57.3 miles) | ⓘLjosland, Iveland, Agder, Norway |
| 92.3km (57.3 miles) | ⓘHåverstad, Iveland, Agder, Norway |
| 92.3km (57.3 miles) | ⓘFrikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, Norway |
| References |
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Tangen Feldspar Mine, Kragerø, Telemark, Norway