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Biotite from
Sturbridge Graphite Mine (Tantiusques Mine; Winthrop Lead Mine), Sturbridge, Worcester County, Massachusetts, 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 Sturbridge Graphite Mine (Tantiusques Mine; Winthrop Lead Mine), Sturbridge, Worcester County, Massachusetts, USA
Data Identifiers
Mindat Occurrence Record ID:657657
Long-form Identifier:1:3:657657:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
7.3km (4.5 miles) ⓘCordierite locality (Bigelow Pond), Union, Tolland County, Connecticut, USA
17.8km (11.1 miles) ⓘMonson quarries (Flynt quarries), Monson, Hampden County, Massachusetts, USA
23.7km (14.7 miles) ⓘBecker Quarry, Willington, Tolland County, Connecticut, USA
38.9km (24.2 miles) ⓘBlanchard Quarries, Uxbridge, Worcester County, Massachusetts, USA
42.8km (26.6 miles) ⓘPelham asbestos mine, Pelham, Hampshire County, Massachusetts, USA
43.3km (26.9 miles) ⓘQuabbin Aqueduct Shaft #2 locality, Holden, Worcester County, Massachusetts, USA
45.2km (28.1 miles) ⓘPelham Granite quarry (Ward Quarry; Valley Quarry), Pelham, Hampshire County, Massachusetts, USA
55.4km (34.5 miles) ⓘLoudville Lead Mines (Manhan Lead-Silver Mine; Southampton Lead Mine; Northampton Lead Mine), Easthampton, Hampshire County, Massachusetts, USA
55.6km (34.6 miles) ⓘCumberland Hill, Cumberland, Providence County, Rhode Island, USA
57.4km (35.7 miles) ⓘMarlborough Junction locality, Marlborough, Middlesex County, Massachusetts, USA
References
USGS Open File Report 45-63
 
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