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
Garta Feldspar Quarry, Stokken, Arendal, Agder, Norway


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 Garta Feldspar Quarry, Stokken, Arendal, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:682886
Long-form Identifier:1:3:682886:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.5km (0.3 miles) ⓘHamnevollneset, Stokken, Arendal, Agder, Norway
2.4km (1.5 miles) ⓘHella 1 Feldspar Quarry, Helle, Stokken, Arendal, Agder, Norway
2.4km (1.5 miles) ⓘHella 2 Feldspar Quarry, Helle, Stokken, Arendal, Agder, Norway
3.0km (1.8 miles) ⓘMørefjær Feldspar Quarry (Mörefjer), Stokken, Arendal, Agder, Norway
3.0km (1.8 miles) ⓘNarestø Feldspar Quarry, Flosta, Arendal, Agder, Norway
3.2km (2.0 miles) ⓘAlviken Feldspar Quarry, Stokken, Arendal, Agder, Norway
8.9km (5.5 miles) ⓘFjeld Quarry (Fjellvand Quarry), Austre Moland, Arendal, Agder, Norway
9.6km (6.0 miles) ⓘGrasås Feldspar Quarry, Austre Moland, Arendal, Agder, Norway
9.9km (6.1 miles) ⓘÅrgruven Iron Mine, Lyngrott Mining Field, Lyngrott, Froland, Agder, Norway
10.0km (6.2 miles) ⓘGloserheia, Froland, Agder, Norway
References
 
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