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
Mount Airy quarries, Surry County, North Carolina, USA


Locality type:Quarry
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 Mount Airy quarries, Surry County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:562432
Long-form Identifier:1:3:562432:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
34.6km (21.5 miles) ⓘElkin Quarry, Surry County, North Carolina, USA
36.3km (22.6 miles) ⓘBelcher Prospect (Weddle Prospect; Old Copper Mine), Southern Lead, Southern Section-Blue Ridge Province, Floyd County, Virginia, USA
37.2km (23.1 miles) ⓘCranberry Copper Mine, Cranberry Creek Segment, Gossan Lead Mining District, Southern Section-Blue Ridge Province, Carroll County, Virginia, USA
37.2km (23.1 miles) ⓘBrown and Stephenson Mine (Brown and Stevenson Mine), Cranberry Creek Segment, Gossan Lead Mining District, Southern Section-Blue Ridge Province, Carroll County, Virginia, USA
37.2km (23.1 miles) ⓘFairmont Copper Mine (Fairmount Copper Mine), Cranberry Creek Segment, Gossan Lead Mining District, Southern Section-Blue Ridge Province, Carroll County, Virginia, USA
37.2km (23.1 miles) ⓘSutherland Prospect (Nowlin Mine; Fisher; Hylton), Southern Lead, Southern Section-Blue Ridge Province, Floyd County, Virginia, USA
37.8km (23.5 miles) ⓘWilkerson Tract Mine (M. Wilkerson Tract Mine), Chestnut Creek Segment, Gossan Lead Mining District, Southern Section-Blue Ridge Province, Carroll County, Virginia, USA
39.4km (24.5 miles) ⓘBetty Baker Mine (Bettie Baker Mine; Paint Bank Mine; Carter Mine), Betty Baker Segment, Gossan Lead Mining District, Southern Section-Blue Ridge Province, Carroll County, Virginia, USA
40.2km (25.0 miles) ⓘToncrae Mine (Toncrae-Howard Mine; Toncray Mine), Southern Lead, Southern Section-Blue Ridge Province, Floyd County, Virginia, USA
40.7km (25.3 miles) ⓘRocky Knob Prospect, Southern Section-Blue Ridge Province, Floyd County, Virginia, USA
References
DeRosset,W.H.M.,1978,Petrology of the Mount Airy granite(M.S thesis)
Blacksburg,Virginia Polytechnic Institute and State University
 
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