Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Biotite from
Arrowood Mine, Macon 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 Arrowood Mine, Macon County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:864881
Long-form Identifier:1:3:864881:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
3.0km (1.9 miles) ⓘPoll Miller Mine, Macon County, North Carolina, USA
3.1km (1.9 miles) ⓘRaby Mine, Macon County, North Carolina, USA
3.4km (2.1 miles) ⓘLin Cove Mine, Macon County, North Carolina, USA
3.7km (2.3 miles) ⓘLyle Cut Mine (Evans Mine), Macon County, North Carolina, USA
3.8km (2.4 miles) ⓘBud Roper Mine, Macon County, North Carolina, USA
5.0km (3.1 miles) ⓘJud Wildes Mine, Macon County, North Carolina, USA
5.2km (3.2 miles) ⓘLissie Ray Mine, Macon County, North Carolina, USA
5.2km (3.2 miles) ⓘKiser Mine, Macon County, North Carolina, USA
5.6km (3.5 miles) ⓘMudhole Mine, Macon County, North Carolina, USA
5.9km (3.6 miles) ⓘRay Cove Mine, Macon County, North Carolina, USA
References
Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577
 
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