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
Birketveit 6 Feldspar Quarry (Spelarhaugen), Birketveit, 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 Birketveit 6 Feldspar Quarry (Spelarhaugen), Birketveit, Iveland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:540634
Long-form Identifier:1:3:540634:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.3km (0.2 miles) ⓘHiltveit 01 Feldspar Quarry (Grasdalen), Hiltveit, Iveland, Agder, Norway
0.8km (0.5 miles) ⓘRossås 09 Feldspar Quarry (Feitedalen 3), Rossås, Iveland, Agder, Norway
0.9km (0.6 miles) ⓘRossås 04 Feldspar Quarry, Rossås, Iveland, Agder, Norway
0.9km (0.6 miles) ⓘHiltveit 02 Feldspar Quarry (Feitedalen), Hiltveit, Iveland, Agder, Norway
0.9km (0.6 miles) ⓘRossås 02 Feldspar Quarry, Rossås, Iveland, Agder, Norway
1.0km (0.6 miles) ⓘRossås 14 Feldspar Quarry, Rossås, Iveland, Agder, Norway
1.6km (1.0 miles) ⓘIvedal 3 feldspar quarry, Ivedal, Iveland, Agder, Norway
1.6km (1.0 miles) ⓘIvedal 2 Feldspar Quarry, Ivedal, Iveland, Agder, Norway
2.1km (1.3 miles) ⓘBirketveit 5 Feldspar Quarry, Birketveit, Iveland, Agder, Norway
2.4km (1.5 miles) ⓘRossås 01 Feldspar Quarry, Rossås, 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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