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
Birkeland 01 Feldspar Quarry, Birkeland, 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:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Birkeland 01 Feldspar Quarry, Birkeland, Iveland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:539700
Long-form Identifier:1:3:539700:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.1km (0.1 miles) ⓘBirkeland, Iveland, Agder, Norway
0.2km (0.1 miles) ⓘBirkeland 05 Feldspar Quarries, Birkeland, Iveland, Agder, Norway
0.2km (0.1 miles) ⓘBirkeland 03 Feldspar Quarry, Birkeland, Iveland, Agder, Norway
0.2km (0.1 miles) ⓘBirkeland 02 Feldspar Quarry, Birkeland, Iveland, Agder, Norway
0.3km (0.2 miles) ⓘKåbuland 04 Feldspar Quarry, Kåbuland, Iveland, Agder, Norway
0.4km (0.3 miles) ⓘBirkeland 04 Feldspar Quarry, Birkeland, Iveland, Agder, Norway
0.6km (0.4 miles) ⓘKatterås 1 Feldspar Quarry, Katterås, Vegusdal, Birkenes, Agder, Norway
0.6km (0.4 miles) ⓘKatterås 2 Feldspar Quarry, Katterås, Vegusdal, Birkenes, Agder, Norway
0.6km (0.4 miles) ⓘKatterås 4 Feldspar Quarry, Katterås, Vegusdal, Birkenes, Agder, Norway
0.6km (0.4 miles) ⓘKåbuland 03 Feldspar Quarry, Kåbuland, Iveland, Agder, Norway
References
Bjørlykke, Knut (1935) The mineral paragenesis and classification of the granite pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 14 (3-4). 211-311
 
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