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
Pennyman Mine, Upson County, Georgia, 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 Pennyman Mine, Upson County, Georgia, USA
Data Identifiers
Mindat Occurrence Record ID:954950
Long-form Identifier:1:3:954950:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.7km (1.1 miles) ⓘShort-Mitchell Mine, Upson County, Georgia, USA
1.8km (1.1 miles) ⓘCunningham prospect, Upson County, Georgia, USA
2.0km (1.3 miles) ⓘCharlie Nims Mine (Charles Nims Mine), Yatesville, Upson County, Georgia, USA
3.6km (2.3 miles) ⓘJoe Person Mine, Upson County, Georgia, USA
4.4km (2.7 miles) ⓘDuke Mine, Upson County, Georgia, USA
4.4km (2.7 miles) ⓘBlount No. 1 Mine, Thomaston, Upson County, Georgia, USA
4.5km (2.8 miles) ⓘReynolds Mine, Upson County, Georgia, USA
6.1km (3.8 miles) ⓘBattles Mine, Culloden, Monroe County, Georgia, USA
6.1km (3.8 miles) ⓘChatfield Mine, Culloden, Monroe County, Georgia, USA
6.2km (3.9 miles) ⓘWalker Wakefield Mine (Benny Barron Mine; Barron Mine), Thomaston, Upson 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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