Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Biotite from
Bedford, Westchester County, New York, USA


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 Bedford, Westchester County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:80649
Long-form Identifier:1:3:80649:5
GUID (UUID V4):0
Localities for Biotite in this Region
Baylis Quarry (Bayliss Quarry), Bedford, Westchester County, New York, USA
Kinkel Quarry, Bedford, Westchester County, New York, USA
Nearest other occurrences of Biotite
1.2km (0.7 miles) ⓘKinkel Quarry, Bedford, Westchester County, New York, USA
1.9km (1.2 miles) ⓘBaylis Quarry (Bayliss Quarry), Bedford, Westchester County, New York, USA
16.2km (10.1 miles) ⓘMc Collum Mine, North Salem, Westchester County, New York, USA
17.3km (10.8 miles) ⓘValhalla, Mount Pleasant, Westchester County, New York, USA
21.6km (13.4 miles) ⓘVoorhis Quarry, Greenwich, Fairfield County, Connecticut, USA
23.2km (14.4 miles) ⓘRedding Glen, Redding, Fairfield County, Connecticut, USA
23.2km (14.4 miles) ⓘTilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA
23.5km (14.6 miles) ⓘInterstate 84 road cuts, Town of Southeast, Putnam County, New York, USA
23.9km (14.8 miles) ⓘCrugers Emery Mine, Montrose, Cortlandt Township, Westchester County, New York, USA
24.6km (15.3 miles) ⓘWestern Connecticut State University, Danbury, Fairfield County, Connecticut, USA
References
Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.65
 
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