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
Gahagan Mine, Hot Springs Barite Mining District, Madison 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 Gahagan Mine, Hot Springs Barite Mining District, Madison County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:1036406
Long-form Identifier:1:3:1036406:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
14.5km (9.0 miles) ⓘUnnamed Feldspar Occurrence (N. C. State Univ. Minerals Research Lab No. 4177; MRDS - 10026472), Madison County, North Carolina, USA
16.5km (10.3 miles) ⓘUnnamed Feldspar Occurrence (N. C. State Univ. Minerals Research Lab No. 4176; MRDS - 10026469), Madison County, North Carolina, USA
16.7km (10.4 miles) ⓘBall Feldspar Mine, Madison County, North Carolina, USA
18.4km (11.4 miles) ⓘUnnamed Feldspar Occurrence (N. C. State Univ. Minerals Research Lab No. 4178; MRDS - 10026466), Madison County, North Carolina, USA
19.6km (12.2 miles) ⓘMars Hill deposit (Rev. Corn Monazite deposit), Mars Hill, Madison County, North Carolina, USA
20.1km (12.5 miles) ⓘUnnamed Feldspar Occurrence (N. C. State Univ. Minerals Research Lab No. 4179; MRDS - 10026470), Madison County, North Carolina, USA
21.3km (13.2 miles) ⓘUnnamed Feldspar Occurrence (N. C. State Univ. Minerals Research Lab No. 4181; MRDS - 10026467), Madison County, North Carolina, USA
21.8km (13.5 miles) ⓘUnnamed Feldspar Occurrence (N. C. State Univ. Minerals Research Lab No. 4180; MRDS - 10026468), Madison County, North Carolina, USA
22.9km (14.2 miles) ⓘSam Cox No. 2, Buncombe Mining District, Madison County, North Carolina, USA
22.9km (14.3 miles) ⓘSam Cox No. 1, Buncombe Mining District, Madison County, North Carolina, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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