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
F. B. Willingham Prospect, Monroe County, Georgia, USA


Locality type:Prospect
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 F. B. Willingham Prospect, Monroe County, Georgia, USA
Data Identifiers
Mindat Occurrence Record ID:955357
Long-form Identifier:1:3:955357:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
4.8km (3.0 miles) ⓘFletcher Mine, Forsyth, Monroe County, Georgia, USA
5.5km (3.4 miles) ⓘWorsham & Goodwin Prospect, Monroe County, Georgia, USA
5.6km (3.5 miles) ⓘRosa Fletcher Prospect, Monroe County, Georgia, USA
6.4km (4.0 miles) ⓘCox Prospect, Monroe County, Georgia, USA
6.8km (4.2 miles) ⓘPeters Mine, Monroe County, Georgia, USA
8.2km (5.1 miles) ⓘCalloway Mine, Monroe County, Georgia, USA
9.7km (6.0 miles) ⓘJ. T. Means Mine, Barnesville, Lamar County, Georgia, USA
12.4km (7.7 miles) ⓘWillie Bowdoin Mine, Monroe County, Georgia, USA
12.4km (7.7 miles) ⓘSugar Hill No. 1 Prospect, Lamar County, Georgia, USA
12.8km (7.9 miles) ⓘHolloway Mine, Monroe County, Georgia, USA
References
Heinrich, E.W., Klepper, M.R., Jahns, R.H. (1953) Mica deposits of the southeastern Piedmont, Part 9, Thomaston-Barnesville district, Georgia; Part 10, Outlying deposits in Georgia. Professional Paper 248f. US Geological Survey doi:10.3133/pp248f
 
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