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
Bratthagen 1, Lågendalen, Hedrum, Larvik Commune, Vestfold, Norway


Locality type:Road Cutting
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 Bratthagen 1, Lågendalen, Hedrum, Larvik Commune, Vestfold, Norway
Data Identifiers
Mindat Occurrence Record ID:550255
Long-form Identifier:1:3:550255:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.2km (0.1 miles) ⓘBratthagen 2, Lågendalen, Hedrum, Larvik Commune, Vestfold, Norway
0.5km (0.3 miles) ⓘBratthagen 3 hillside pegmatites, Lågendalen, Hedrum, Larvik Commune, Vestfold, Norway
3.6km (2.2 miles) ⓘLysebo roadcut, Lysebo, Hedrum, Larvik Commune, Vestfold, Norway
5.9km (3.7 miles) ⓘAnundsjøen, Kvelde, Larvik Commune, Vestfold, Norway
6.8km (4.2 miles) ⓘHedrum Quarry, Lågendalen, Hedrum, Larvik Commune, Vestfold, Norway
6.9km (4.3 miles) ⓘRingdalskogen, Hedrum, Larvik Commune, Vestfold, Norway
7.9km (4.9 miles) ⓘKodal 1, Kodal P-Fe-Ti deposit, Kodal, Sandefjord, Vestfold, Norway
8.4km (5.2 miles) ⓘFarrisite locality, Kjose, Larvik Commune, Vestfold, Norway
9.1km (5.7 miles) ⓘVardåsen Quarry, Malerød, Larvik Commune, Vestfold, Norway
9.5km (5.9 miles) ⓘIglestjern Quarry, Kjose, Larvik Commune, Vestfold, Norway
References
Raade, G., Mladeck, Michel H. (1977) Parakeldyshite from Norway. The Canadian Mineralogist, 15 (1) 102-107
 
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