| Locality type: | Mine |
| Classification |
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| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Bergsgruva, Øvre Eiker, Buskerud, Norway |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 905497 |
| Long-form Identifier: | 1:3:905497:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 7.5km (4.7 miles) | ⓘGulliksrud feldspar quarry, Øvre Eiker, Buskerud, Norway |
| 9.4km (5.8 miles) | ⓘRundemyr, Øvre Eiker, Buskerud, Norway |
| 9.6km (6.0 miles) | ⓘBakstevalåsen, Gunhildrud, Øvre Eiker, Buskerud, Norway |
| 9.8km (6.1 miles) | ⓘShore of Eikeren, Hamre, Øvre Eiker, Buskerud, Norway |
| 13.0km (8.1 miles) | ⓘBatteriet, Åssiden, Drammen, Buskerud, Norway |
| 15.4km (9.6 miles) | ⓘDalemyr Mine (Treholt Mine), Dalemyr Mines, Mjøndalen, Drammen, Buskerud, Norway |
| 15.9km (9.9 miles) | ⓘNarverud Mines, Mjøndalen, Drammen, Buskerud, Norway |
| 17.9km (11.1 miles) | ⓘGrøsli Mine, Flesberg, Buskerud, Norway |
| 18.1km (11.3 miles) | ⓘE 134 Road, Drammen, Buskerud, Norway |
| 20.2km (12.6 miles) | ⓘVerlorne Sohn Mine, Kongsberg, Buskerud, Norway |
| References |
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