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Biotite from
Biscaia quarry, Biscaia, Alcabideche, Cascais, Lisbon, Portugal


Locality type:Quarry
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 Biscaia quarry, Biscaia, Alcabideche, Cascais, Lisbon, Portugal
Data Identifiers
Mindat Occurrence Record ID:891076
Long-form Identifier:1:3:891076:9
GUID (UUID V4):0
Nearest other occurrences of Biotite
4.0km (2.5 miles) ⓘCape Roca, Colares, Sintra, Lisbon, Portugal
73.8km (45.8 miles) ⓘBerlengas Islands, Peniche, Leiria, Portugal
References
Carta Geológica de Portugal (1/50.000), Notícia Explicativa da Folha 34-A SINTRA, M.Ramalho, J.Pais, J.Rey, P.Y.Berthou, C.A.M.Alves, T.Palácios, N.Leal, M.C.Kullberg, Serviços Geológicos de Portugal, Lisboa 1993.
 
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