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
Iglestjern Quarry, Kjose, Larvik Commune, Vestfold, 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 Iglestjern Quarry, Kjose, Larvik Commune, Vestfold, Norway
Data Identifiers
Mindat Occurrence Record ID:1444080
Long-form Identifier:1:3:1444080:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.3km (1.5 miles) ⓘFarrisite locality, Kjose, Larvik Commune, Vestfold, Norway
6.0km (3.7 miles) ⓘLysebo roadcut, Lysebo, Hedrum, Larvik Commune, Vestfold, Norway
6.2km (3.9 miles) ⓘBuer, Bjørkedalen, Porsgrunn, Telemark, Norway
6.4km (3.9 miles) ⓘAnundsjøen, Kvelde, Larvik Commune, Vestfold, Norway
7.0km (4.3 miles) ⓘKokkersvold, Kokkersvold - Blåfjell E18 roadcuts, Langangen, Porsgrunn, Telemark, Norway
7.0km (4.3 miles) ⓘChiavennite dike, Blåfjell (E18 roadcuts), Kokkersvold - Blåfjell E18 roadcuts, Langangen, Porsgrunn, Telemark, Norway
7.4km (4.6 miles) ⓘBjørkedalsvegen road cut 1, Kjølsrød, Bjørkedalen, Porsgrunn, Telemark, Norway
7.9km (4.9 miles) ⓘRønningen E 18 roadcuts, Porsgrunn, Telemark, Norway
8.1km (5.0 miles) ⓘE18 roadcuts, Slevolden, Porsgrunn, Telemark, Norway
9.0km (5.6 miles) ⓘVardåsen Quarry, Malerød, Larvik Commune, Vestfold, Norway
References
Knut Edvard Larsen and observation collection july 2021
 
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