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
Silly Mine, Yancey 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 Silly Mine, Yancey County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:868235
Long-form Identifier:1:3:868235:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.0km (0.0 miles) ⓘBittner Mine, Yancey County, North Carolina, USA
2.7km (1.7 miles) ⓘGriffin Mine, Yancey County, North Carolina, USA
3.1km (1.9 miles) ⓘLaws Mine, Yancey County, North Carolina, USA
3.5km (2.2 miles) ⓘGeorges Fork Mine, Yancey County, North Carolina, USA
3.9km (2.4 miles) ⓘJohnson's Cove Mine, Yancey County, North Carolina, USA
4.6km (2.9 miles) ⓘRay Mica Mine, Hurricane Mountain, Burnsville, Yancey County, North Carolina, USA
4.7km (2.9 miles) ⓘHiggins Mine, Mitchell County, North Carolina, USA
4.7km (2.9 miles) ⓘM. P. Letterman Mine, Yancey County, North Carolina, USA
5.4km (3.4 miles) ⓘSpec Mine (Speck Mine), Micaville, Celo, Yancey County, North Carolina, USA
5.5km (3.4 miles) ⓘGrape Hollow Mine, Yancey County, North Carolina, USA
References
Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577
 
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