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Biotite from
Picoto Mine, Vilar Seco, Nelas, Viseu, Portugal


Locality type:Mine
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Picoto Mine, Vilar Seco, Nelas, Viseu, Portugal
Data Identifiers
Mindat Occurrence Record ID:1227340
Long-form Identifier:1:3:1227340:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
9.2km (5.7 miles) ⓘCubos-Mesquitela-Mangualde area, Mangualde (Mesquitela e Cunha Alta), Mangualde, Viseu, Portugal
10.2km (6.4 miles) ⓘChão do Castanheiro, Cubos-Mesquitela-Mangualde area, Mangualde (Mesquitela e Cunha Alta), Mangualde, Viseu, Portugal
10.3km (6.4 miles) ⓘRegada, Cubos-Mesquitela-Mangualde area, Mangualde (Mesquitela e Cunha Alta), Mangualde, Viseu, Portugal
10.4km (6.4 miles) ⓘRochel, Cubos-Mesquitela-Mangualde area, Mangualde (Mesquitela e Cunha Alta), Mangualde, Viseu, Portugal
16.6km (10.3 miles) ⓘSeixos Alvos Mine, U.F Couto de Cima e Couto de Baixo, Viseu, Viseu, Portugal
21.2km (13.2 miles) ⓘBejanca Mine (Carvalhal do Estanho), Queirã, Vouzela, Viseu, Portugal
23.1km (14.3 miles) ⓘVila Seca Mine, Vila Seca, Tavares (Chãs; Várzea e Travanca), Mangualde, Viseu, Portugal
24.4km (15.2 miles) ⓘVenturinha, Sezures, Penalva do Castelo, Viseu, Portugal
30.5km (19.0 miles) ⓘFonte Limeira quarry, U.F Romãs Decermilo e Vila Longa, Sátão, Viseu, Portugal
34.7km (21.6 miles) ⓘAssunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu, Portugal
References
Teixeira, R., Antunes, I.M., Neiva, A.M.R. (2010) Uranium minerals from the Picoto uranium mine area, central Portugal. Goldschmidt Conference Abstracts 2010.
 
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