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Biotite from
Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA


Locality type:Town
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
Associated Minerals Based on Photo Data:
Muscovite1
Quartz1
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:967339
Long-form Identifier:1:3:967339:7
GUID (UUID V4):0
Localities for Biotite in this Region
Comley's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
Fowler's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
Nearest other occurrences of Biotite
1.3km (0.8 miles) ⓘFowler's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
2.8km (1.7 miles) ⓘComley's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
3.4km (2.1 miles) ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
3.9km (2.4 miles) ⓘRidge Avenue and School Lane Quarries, East Falls, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA
7.0km (4.4 miles) ⓘJerry O'Neill's Quarry, Tacony Creek Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
7.1km (4.4 miles) ⓘHoffman's Quarry (Hoffmans Quarry), Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
7.4km (4.6 miles) ⓘMiquon (Miquon Station; Lafayette; Lafayette Station), Whitemarsh Township, Montgomery County, Pennsylvania, USA
8.0km (5.0 miles) ⓘClark's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
8.3km (5.2 miles) ⓘBarber's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
13.0km (8.1 miles) ⓘHolmesburg Granite Company Quarry, Holmesburg, Philadelphia, Philadelphia County, Pennsylvania, USA
References
Gordon, Samuel G. (1922) The Mineralogy of Pennsylvania. Special Publication 1. The Academy of Natural Sciences of Philadelphia 255pp. p.225
 
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