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
Austre Mørketjønn 1 Feldspar Quarry, Austre Mørketjønn, Iveland, 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:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Austre Mørketjønn 1 Feldspar Quarry, Austre Mørketjønn, Iveland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:1504723
Long-form Identifier:1:3:1504723:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.0km (0.0 miles) ⓘAustre Mørketjønn 2 Feldspar Quarry, Austre Mørketjønn, Iveland, Agder, Norway
0.1km (0.1 miles) ⓘAustre Mørketjønn, Iveland, Agder, Norway
0.5km (0.3 miles) ⓘLauvland 09 Feldspar Quarry, Lauvland, Evje og Hornnes, Agder, Norway
0.6km (0.4 miles) ⓘLauvland 08 Feldspar Quarry, Skavdalen, Lauvland, Evje og Hornnes, Agder, Norway
0.6km (0.4 miles) ⓘLauvland 11 Feldspar Quarry, Lauvland, Evje og Hornnes, Agder, Norway
0.6km (0.4 miles) ⓘLauvland 07 Feldspar Quarry, Skavdalen, Lauvland, Evje og Hornnes, Agder, Norway
0.7km (0.4 miles) ⓘLauvland 10 Feldspar Quarry, Lauvland, Evje og Hornnes, Agder, Norway
0.7km (0.4 miles) ⓘLauvland 01 Feldspar Quarry (Skavdalen), Skavdalen, Lauvland, Evje og Hornnes, Agder, Norway
1.0km (0.6 miles) ⓘLauvland 03b Feldspar Quarry, Lauvland, Evje og Hornnes, Agder, Norway
1.1km (0.7 miles) ⓘLauvland 03 Feldspar Quarry (Saga), Lauvland, Evje og Hornnes, Agder, Norway
References
(n.d.) Evje og Hornnes geomuseum Fennefoss Collection.
 
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