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
Unnamed Marble occurrence [1], Polk County, North Carolina, USA


Locality type:Occurrence
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 Unnamed Marble occurrence [1], Polk County, North Carolina, USA
Data Identifiers
Mindat Occurrence Record ID:934021
Long-form Identifier:1:3:934021:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
14.1km (8.8 miles) ⓘYoungs Mountain deposit, Rutherford County, North Carolina, USA
15.0km (9.3 miles) ⓘUnnamed Crushed Stone Quarry [1], Henderson County, North Carolina, USA
15.9km (9.9 miles) ⓘUnnamed Crushed Stone Quarry [2], Henderson County, North Carolina, USA
17.7km (11.0 miles) ⓘHendersonville Quarry, Henderson County, North Carolina, USA
20.3km (12.6 miles) ⓘKay Mine, Rutherford County, North Carolina, USA
22.0km (13.7 miles) ⓘChrist School Quarry, Buncombe County, North Carolina, USA
24.3km (15.1 miles) ⓘBlack Mountain prospect, Black Mountain, Buncombe County, North Carolina, USA
39.8km (24.8 miles) ⓘThomas Mine (Balsam Gap kyanite location; Parkway kyanite location), Buncombe County, North Carolina, USA
40.1km (24.9 miles) ⓘMurphy Mine, South Toe River, Yancey County, North Carolina, USA
40.8km (25.4 miles) ⓘW. H. Bailey Deposit, Rutherford County, North Carolina, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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