| Locality type: | Shaft |
| 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 |
| Associated Minerals Based on Photo Data: |
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|
| Spessartine | 5 |
| - var Brandãosite | 5 |
| Feldspar Group | 2 |
| Autunite | 2 |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Regada, Cubos-Mesquitela-Mangualde area, Mangualde (Mesquitela e Cunha Alta), Mangualde, Viseu, Portugal |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 353070 |
| Long-form Identifier: | 1:3:353070:2 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 4.0km (2.5 miles) | ⓘCubos-Mesquitela-Mangualde area, Mangualde (Mesquitela e Cunha Alta), Mangualde, Viseu, Portugal |
| 4.4km (2.7 miles) | ⓘChão do Castanheiro, Cubos-Mesquitela-Mangualde area, Mangualde (Mesquitela e Cunha Alta), Mangualde, Viseu, Portugal |
| 4.4km (2.7 miles) | ⓘRochel, Cubos-Mesquitela-Mangualde area, Mangualde (Mesquitela e Cunha Alta), Mangualde, Viseu, Portugal |
| 10.3km (6.4 miles) | ⓘPicoto Mine, Vilar Seco, Nelas, Viseu, Portugal |
| 13.6km (8.5 miles) | ⓘVila Seca Mine, Vila Seca, Tavares (Chãs; Várzea e Travanca), Mangualde, Viseu, Portugal |
| 14.2km (8.8 miles) | ⓘVenturinha, Sezures, Penalva do Castelo, Viseu, Portugal |
| 20.5km (12.7 miles) | ⓘFonte Limeira quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal |
| 21.8km (13.6 miles) | ⓘSeixos Alvos Mine, U.F Couto de Cima e Couto de Baixo, Viseu, Viseu, Portugal |
| 24.5km (15.2 miles) | ⓘBejanca Mine (Carvalhal do Estanho), Queirã, Vouzela, Viseu, Portugal |
| 25.2km (15.6 miles) | ⓘAssunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu, Portugal |
| References |
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Regada, Cubos-Mesquitela-Mangualde area, Mangualde, Mangualde, Viseu, Portugal