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Biotite from
Piedmont Quarry, Forsyth County, North Carolina, USA


Locality type:Quarry
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 Piedmont Quarry, Forsyth County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:817511
Long-form Identifier:1:3:817511:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
28.7km (17.8 miles) ⓘLindsay Mine, Greensboro, Guilford County, North Carolina, USA
29.3km (18.2 miles) ⓘDeep River Mine (Coffin), Guilford County Copper Mining District, Guilford County, North Carolina, USA
30.9km (19.2 miles) ⓘStokesdale Quarry (Vulcan-Stokesdale Quarry), Stokesdale, Guilford County, North Carolina, USA
36.3km (22.5 miles) ⓘFisher Hill Mine, Guilford County Copper Mining District, Guilford County, North Carolina, USA
39.0km (24.2 miles) ⓘMacCulloch Mine (North State Mine), Greensboro, Guilford County, North Carolina, USA
42.6km (26.5 miles) ⓘSawyer Mine, Randolph County, North Carolina, USA
43.7km (27.2 miles) ⓘHoover Hill Mine, Asheboro, Randolph County, North Carolina, USA
44.9km (27.9 miles) ⓘNew Sawyer Mine (Powell; Ross), Randolph County, North Carolina, USA
54.2km (33.7 miles) ⓘUnnamed Au placer, Bell Branch, Iredell County, North Carolina, USA
54.3km (33.7 miles) ⓘDunns Mountain, Rowan County, North Carolina, USA
References
Clays and Clay Minerals,Vol.20, (343-358)
Hoda,Syed N. and Hood,William C.,(1972) Laboratory Alteration of Trioctahedral Micas
 
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