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
Posthemsberget quarry, Linderås, Tranås, Jönköping County, Sweden


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 Posthemsberget quarry, Linderås, Tranås, Jönköping County, Sweden
Data Identifiers
Mindat Occurrence Record ID:275592
Long-form Identifier:1:3:275592:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.3km (0.8 miles) ⓘLångeberget quarry, Linderås, Tranås, Jönköping County, Sweden
3.6km (2.2 miles) ⓘHäggarp quarry, Linderås, Tranås, Jönköping County, Sweden
8.2km (5.1 miles) ⓘLilla Kungshult quarry, Tranås, Jönköping County, Sweden
8.5km (5.3 miles) ⓘKlevakrossen quarry, Tranås, Jönköping County, Sweden
9.8km (6.1 miles) ⓘÖdesjön quarry, Tranås, Jönköping County, Sweden
10.2km (6.3 miles) ⓘVedebo Norra quarry, Tranås, Jönköping County, Sweden
10.4km (6.4 miles) ⓘÖdesjön Norra quarry, Tranås, Jönköping County, Sweden
10.5km (6.5 miles) ⓘTranås quarry, Tranås, Jönköping County, Sweden
16.8km (10.4 miles) ⓘNorra Kärr, Gränna, Jönköping, Jönköping County, Sweden
22.8km (14.2 miles) ⓘTossehall quarry, Ölmstad, Jönköping, Jönköping County, Sweden
References
Shaikh-Persson-Sundberg-Wik: SGU Rep. 50 , 1989
 
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