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Biotite from
Western portal, New York - Susquehanna & Western RR tunnel, Fairview, Bergen Hill, Bergen Co., New Jersey, USA

Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Comments:Occurs in vesuvianite hornfels associated with the Palisades diabase.
Confirmation
Validity:Believed Valid
References
References:NJ State Geol. Ann. Rpt (1907):145.
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Western portal, New York - Susquehanna & Western RR tunnel, Fairview, Bergen Hill, Bergen Co., New Jersey, USA
Nearest other occurrences of Biotite
1.6km (1.0 miles) New York - Susquehanna & Western Railroad tunnel, Edgewater, Bergen Co., New Jersey, USA
4.6km (2.9 miles) 82nd Street & Central Park West, Manhattan Island, Manhattan (New York Co.), New York, USA
7.5km (4.6 miles) 63rd Street Tunnel, Manhattan Island, Manhattan (New York Co.), New York, USA
8.8km (5.5 miles) Tubby Hook occurrences, Manhattan (New York Co.), New York, USA
11.5km (7.1 miles) World Trade Center Site, Manhattan (New York Co.), New York, USA
24.8km (15.4 miles) Larchmont, Mamaroneck, Westchester Co., New York, USA
29.6km (18.4 miles) Harrison, Westchester Co., New York, USA
29.6km (18.4 miles) Lake Street Quarry, Harrison, Westchester Co., New York, USA
31.1km (19.3 miles) Pompton Junction feldspar deposit, Pompton Lakes, Passaic Co., New Jersey, USA
33.1km (20.6 miles) Jersey City Water Supply Company Quarry, Montville Township, Morris Co., New Jersey, USA
 
Mineral and/or Locality  
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