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Biotite from
Green's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield Co., Connecticut, USA

Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
References
References:Januzzi, 1976. Mineral Localities of CT and Southeastern NY State
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Green's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield Co., Connecticut, USA
Nearest other occurrences of Biotite
7.7km (4.8 miles) Rockside Quarry (Mine Hill Quarry), Mine Hill (Ore Hill), Roxbury, Litchfield Co., Connecticut, USA
8.7km (5.4 miles) Nonnewaug River Industrial Park, Woodbury, Litchfield Co., Connecticut, USA
9.9km (6.1 miles) U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
10.6km (6.6 miles) Kyanite locality (Judds Bridge locality), Washington, Litchfield Co., Connecticut, USA
12.4km (7.7 miles) Curtis Quarry (Southford Quarry; Southford pegmatite; Southbury rose quartz quarry; Bridgeport Woodfinishing Co. Quarry; Hulls Hill), Southford, Southbury, New Haven Co., Connecticut, USA
12.7km (7.9 miles) Agstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA
16.6km (10.3 miles) North Street mall, Danbury, Fairfield County, Connecticut, USA
17.5km (10.9 miles) New England Materials quarry, Monroe, Fairfield County, Connecticut, USA
17.6km (10.9 miles) Danbury, Fairfield County, Connecticut, USA
20.2km (12.6 miles) Western Connecticut State College, Danbury, Fairfield County, Connecticut, USA
 
Mineral and/or Locality  
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