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
Centerville, Gwinnett County, Georgia, USA


Locality type:Village
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 Centerville, Gwinnett County, Georgia, USA
Data Identifiers
Mindat Occurrence Record ID:317730
Long-form Identifier:1:3:317730:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
7.1km (4.4 miles) ⓘEthel quarry, Stone Mountain-Lithonia Mining District, DeKalb County, Georgia, USA
7.4km (4.6 miles) ⓘBritt Quarry, Stone Mountain-Lithonia Mining District, DeKalb County, Georgia, USA
8.7km (5.4 miles) ⓘStone Mountain Quarry, DeKalb County, Georgia, USA
8.8km (5.5 miles) ⓘBlock Quarry, Stone Mountain-Lithonia Mining District, DeKalb County, Georgia, USA
8.9km (5.6 miles) ⓘKellogg Quarry, Stone Mountain-Lithonia Mining District, DeKalb County, Georgia, USA
9.2km (5.7 miles) ⓘCoffey Quarry, Stone Mountain-Lithonia Mining District, DeKalb County, Georgia, USA
9.5km (5.9 miles) ⓘVenable Estate Quarries, Stone Mountain-Lithonia Mining District, DeKalb County, Georgia, USA
9.7km (6.0 miles) ⓘWells Quarry, Stone Mountain-Lithonia Mining District, DeKalb County, Georgia, USA
10.6km (6.6 miles) ⓘHayne Quarry, Stone Mountain-Lithonia Mining District, DeKalb County, Georgia, USA
12.2km (7.6 miles) ⓘLithonia Post Office, DeKalb County, Georgia, USA
References
Cook, Robert B. (1978) Minerals of Georgia: Their Properties and Occurrences. Bulletin 92. State of Georgia Department of Natural Resources
 
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