Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Biotite from
Fall Branch Mine, Avery 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 Fall Branch Mine, Avery County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:881353
Long-form Identifier:1:3:881353:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.1km (0.0 miles) ⓘGrapevine Mine, Avery County, North Carolina, USA
0.4km (0.2 miles) ⓘSlippery Elm Mine, Avery County, North Carolina, USA
0.4km (0.2 miles) ⓘFriel Vance Mine (Freel Vance Mine; Jose Camina MIne), Avery County, North Carolina, USA
0.5km (0.3 miles) ⓘJohnson Mine, Avery County, North Carolina, USA
0.7km (0.4 miles) ⓘEmmons Knob Mine, Avery County, North Carolina, USA
1.1km (0.7 miles) ⓘHoppey Mine, Avery County, North Carolina, USA
1.2km (0.7 miles) ⓘA Mine, Avery County, North Carolina, USA
1.6km (1.0 miles) ⓘPine Branch Mine, Avery County, North Carolina, USA
1.6km (1.0 miles) ⓘLittle Elk Mine, Avery County, North Carolina, USA
2.3km (1.4 miles) ⓘGeorge Burleson Mine, Plumtree, Avery 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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