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Biotite from
Deep River Mine (Coffin), Guilford County Copper Mining District, Guilford County, North Carolina, 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 Deep River Mine (Coffin), Guilford County Copper Mining District, Guilford County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:924656
Long-form Identifier:1:3:924656:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.8km (0.5 miles) ⓘLindsay Mine, Greensboro, Guilford County, North Carolina, USA
10.6km (6.6 miles) ⓘFisher Hill Mine, Guilford County Copper Mining District, Guilford County, North Carolina, USA
18.2km (11.3 miles) ⓘMacCulloch Mine (North State Mine), Greensboro, Guilford County, North Carolina, USA
18.4km (11.4 miles) ⓘNew Sawyer Mine (Powell; Ross), Randolph County, North Carolina, USA
18.6km (11.5 miles) ⓘSawyer Mine, Randolph County, North Carolina, USA
23.4km (14.6 miles) ⓘHoover Hill Mine, Asheboro, Randolph County, North Carolina, USA
29.3km (18.2 miles) ⓘPiedmont Quarry, Forsyth County, North Carolina, USA
30.3km (18.8 miles) ⓘRedding Mine, Randolph County, North Carolina, USA
32.1km (20.0 miles) ⓘStokesdale Quarry (Vulcan-Stokesdale Quarry), Stokesdale, Guilford County, North Carolina, USA
38.7km (24.0 miles) ⓘRush Mine, Randolph County, North Carolina, USA
References
Carpenter, P. Albert III (1976) Metallic Mineral Deposits of the Carolina Slate Belt. Bulletin 84. North Carolina Geological Survey
 
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