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Biotite from
Fisher Hill Mine, Guilford County Copper Mining District, Guilford Co., North Carolina, USA

Locality type:Mine
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:Carpenter III, P. Albert (1976) Metallic Mineral Deposits of the Carolina Slate Belt, North Carolina : NCGS Bulletion 84
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Fisher Hill Mine, Guilford County Copper Mining District, Guilford Co., North Carolina, USA
Nearest other occurrences of Biotite
8.5km (5.3 miles) MacCulloch Mine (North State Mine), Greensboro, Guilford Co., North Carolina, USA
10.5km (6.6 miles) Lindsay Mine, Greensboro, Guilford Co., North Carolina, USA
10.6km (6.6 miles) Deep River Mine (Coffin), Guilford County Copper Mining District, Guilford Co., North Carolina, USA
22.3km (13.8 miles) New Sawyer Mine (Powell; Ross), Carolina Slate Belt, Randolph Co., North Carolina, USA
24.7km (15.3 miles) Sawyer Mine, Carolina Slate Belt, Randolph Co., North Carolina, USA
28.9km (18.0 miles) Stokesdale Quarry (Vulcan-Stokesdale Quarry), Stokesdale, Guilford Co., North Carolina, USA
30.7km (19.1 miles) Redding Mine, Carolina Slate Belt, Randolph Co., North Carolina, USA
30.8km (19.1 miles) Hoover Hill Mine, Asheboro, Randolph Co., North Carolina, USA
36.3km (22.5 miles) Piedmont Quarry, Forsyth Co., North Carolina, USA
39.7km (24.7 miles) Pilot Mountain, Randolph Co., North Carolina, USA
 
Mineral and/or Locality  
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