| 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 Seixigal (Pereira de Selão), Vilas Boas, Vidago, Chaves, Vila Real, Portugal |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 783271 |
| Long-form Identifier: | 1:3:783271:0 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 10.6km (6.6 miles) | ⓘLimarinho deposit, Ardãos e Bobadela, Boticas, Vila Real, Portugal |
| 32.5km (20.2 miles) | ⓘTrigueiriça Mines, Rebordelo, Vinhais, Bragança, Portugal |
| 34.9km (21.7 miles) | ⓘMonte de Entre-Portelas Mine (S. João Mine; Adoria Mine), Cerva e Limões, Ribeira de Pena, Vila Real, Portugal |
| 36.9km (23.0 miles) | ⓘBorralha Mines, Salto, Montalegre, Vila Real, Portugal |
| 37.4km (23.3 miles) | ⓘErvedosa Mine (Tuela Mine), Ervedosa, Vinhais, Bragança, Portugal |
| 41.4km (25.7 miles) | ⓘLamas de Olo pluton, Vila Marim, Vila Real, Vila Real, Portugal |
| 45.5km (28.3 miles) | ⓘBorrageiro Mine, Cabril, Montalegre, Vila Real, Portugal |
| 45.9km (28.5 miles) | ⓘMurçós Mines, Murçós, Macedo de Cavaleiros, Bragança, Portugal |
| 46.2km (28.7 miles) | ⓘAlijó spodumene pegmatite, São Mamede de Ribatua, Alijó, Vila Real, Portugal |
| 49.4km (30.7 miles) | ⓘMacedo de Cavaleiros Volcanic area, Bornes, Macedo de Cavaleiros, Bragança, Portugal |
| References |
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