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Biotite from
French Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA


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 French Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:1994
Long-form Identifier:1:3:1994:1
GUID (UUID V4):0
Nearest other occurrences of Biotite
13.0km (8.1 miles) ⓘBenjamin Franklin Mine, Chester Springs, West Pikeland Township, Chester County, Pennsylvania, USA
13.9km (8.7 miles) ⓘGrace Mine, Morgantown, Berks County, Pennsylvania, USA
22.1km (13.7 miles) ⓘOld Perkiomen Mine, Lower Frederick Township, Montgomery County, Pennsylvania, USA
24.1km (15.0 miles) ⓘCoatesville pegmatite locality, Coatesville, Chester County, Pennsylvania, USA
40.0km (24.9 miles) ⓘGap Mine, Bart Township, Lancaster County, Pennsylvania, USA
40.8km (25.3 miles) ⓘMiquon (Miquon Station; Lafayette; Lafayette Station), Whitemarsh Township, Montgomery County, Pennsylvania, USA
41.2km (25.6 miles) ⓘDeshong's Quarry, Leiperville, Ridley Township, Delaware County, Pennsylvania, USA
44.8km (27.8 miles) ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
46.0km (28.6 miles) ⓘHoopes Dam, New Castle County, Delaware, USA
46.2km (28.7 miles) ⓘComley's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
References
Sloto, Ronald A., Dickinson, Lana L. (1994) Famous Mineral Localities: The French Creek Mine, St. Peters, Chester County, Pennsylvania. The Mineralogical Record, 25 (2) 105-120
 
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