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
Powdermill Mine (Big Shaft Mine; Powdermill Roughs Mine), Plumtree, 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 Powdermill Mine (Big Shaft Mine; Powdermill Roughs Mine), Plumtree, Avery County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:397510
Long-form Identifier:1:3:397510:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.3km (0.2 miles) ⓘLincoln Rock Mine, Plumtree, Avery County, North Carolina, USA
0.4km (0.2 miles) ⓘShop Mine, Plumtree, Avery County, North Carolina, USA
0.4km (0.3 miles) ⓘCharles Rock Mine, Plumtree, Avery County, North Carolina, USA
0.7km (0.4 miles) ⓘTom Cantrell Mine, Plumtree, Avery County, North Carolina, USA
0.7km (0.5 miles) ⓘBobby Hughes Prospect, Plumtree, Avery County, North Carolina, USA
0.7km (0.5 miles) ⓘBen Aldrige Mine, Plumtree, Avery County, North Carolina, USA
0.9km (0.6 miles) ⓘDeep Gap Mine (Old Ben Aldridge Mine), Plumtree, Avery County, North Carolina, USA
1.6km (1.0 miles) ⓘFlint Mine, Plumtree, Avery County, North Carolina, USA
1.6km (1.0 miles) ⓘDugger Mine, Plumtree, Avery County, North Carolina, USA
1.6km (1.0 miles) ⓘAaron Buchanan Mine, Plumtree, Avery County, North Carolina, USA
References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.
 
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