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Biotite from
Ornavasso pegmatite, Ornavasso, Verbano-Cusio-Ossola Province, Piedmont, Italy

Locality type:Pegmatite
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
References
References:Natale G. (1979): Ancora sulla pegmatite di Ornavasso. Riv. Mineral. Ital., 1, serie 2, 3, 85.
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Ornavasso pegmatite, Ornavasso, Verbano-Cusio-Ossola Province, Piedmont, Italy
Nearest other occurrences of Biotite
3.2km (2.0 miles) Migiandone Mine (Miggiandone), Ornavasso, Verbano-Cusio-Ossola Province, Piedmont, Italy
3.9km (2.4 miles) Nibbio-Val Faera (Nibbio-Val Fredda) pegmatites, Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy
4.9km (3.0 miles) Mont'Orfano (Montorfano), Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy
7.3km (4.5 miles) Cirla Quarry (Monte Camoscio Quarry; Camoscio Quarry), Feriolo, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
17.3km (10.7 miles) Grignaschi quarry, Cosasca, Trontano, Verbano-Cusio-Ossola Province, Piedmont, Italy
19.0km (11.8 miles) I Mondei (Ca' Mondei), Montescheno, Verbano-Cusio-Ossola Province, Piedmont, Italy
21.8km (13.6 miles) Valmaggia, Varallo Sesia, Vercelli Province, Piedmont, Italy
32.5km (20.2 miles) Verampio, Crodo, Verbano-Cusio-Ossola Province, Piedmont, Italy
36.8km (22.9 miles) Laghetto Quarry, Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy
37.2km (23.1 miles) Del Prete Quarry, Cuasso al Piano, Cuasso al Monte, Varese Province, Lombardy, Italy
 
Mineral and/or Locality  
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