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
Middagsknatten west, Froland, 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 Middagsknatten west, Froland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:1389024
Long-form Identifier:1:3:1389024:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
1.0km (0.6 miles) ⓘRambeisåsen South Feldspar Quarry (Rambeisåsen 04), Rambeisåsen, Froland, Agder, Norway
1.0km (0.6 miles) ⓘØygarden (Kleivmyr 12), Kleivmyr, Froland, Agder, Norway
1.0km (0.7 miles) ⓘBjortjønn (Bjortjenn), Hynnekleiv, Froland, Agder, Norway
1.1km (0.7 miles) ⓘTjørnene (Kleivmyr 11), Kleivmyr, Froland, Agder, Norway
1.4km (0.8 miles) ⓘLille Kleivmyr Quarry (Kleivmyr 1), Kleivmyr, Froland, Agder, Norway
1.4km (0.9 miles) ⓘRasmusmyråsen vestre feldspar quarry (Kleivmyr 09), Kleivmyr, Froland, Agder, Norway
1.4km (0.9 miles) ⓘHaukedalslia Feldspar Quarry (Rambeisåsen 06), Rambeisåsen, Froland, Agder, Norway
1.4km (0.9 miles) ⓘRasmusmyråsen østre feldspar quarry (Kleivmyr 10), Kleivmyr, Froland, Agder, Norway
1.5km (0.9 miles) ⓘKleivmyr 07c feldspar quarry, Kleivmyr, Froland, Agder, Norway
1.6km (1.0 miles) ⓘSønnristjern Feldspar Quarry (Rambeisåsen 01), Rambeisåsen, Froland, Agder, Norway
References
Ihlen P.M., Henderson I., Larsen, R.B., Lynum R. (2001): Potensielle ressurser av kvarts- og feltspatråstoffer på Sørlandet, I: Regional prøvetakning av utvalgte feltspatbrudd i Frolandsområdet. NGU Rapport 2001.044, 46 pp.
 
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