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
Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway


05910410017532064839287.jpg
Phlogopite

Ludvig Eugen adit, Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
05910410017532064839287.jpg
Phlogopite

Ludvig Eugen adit, Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
05690260017532064848668.jpg
Phlogopite

Ludvig Eugen adit, Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
Locality type:Mine
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 Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
Data Identifiers
Mindat Occurrence Record ID:753107
Long-form Identifier:1:3:753107:1
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.9km (0.6 miles) ⓘSkuterud Mines, Modum West, Modum, Buskerud, Norway
5.0km (3.1 miles) ⓘHilsen Farm, Snarum, Modum, Buskerud, Norway
6.6km (4.1 miles) ⓘDøvikkollen, Modum West, Modum, Buskerud, Norway
10.1km (6.3 miles) ⓘDypingdal serpentine-magnesite deposit, Snarum, Modum, Buskerud, Norway
14.7km (9.2 miles) ⓘErtelien Mine, Ertelien Mines, Holleia, Ringerike Ni Mines, Ringerike, Buskerud, Norway
15.2km (9.5 miles) ⓘGrågalten Mine, Sigdal Nikkelværk, Sigdal, Buskerud, Norway
18.0km (11.2 miles) ⓘSkjerpevika, Holleia, Ringerike Ni Mines, Ringerike, Buskerud, Norway
21.4km (13.3 miles) ⓘGrøsli Mine, Flesberg, Buskerud, Norway
22.5km (14.0 miles) ⓘSkaug Mine, Holleia, Ringerike Ni Mines, Ringerike, Buskerud, Norway
24.1km (15.0 miles) ⓘBergsgruva, Øvre Eiker, Buskerud, Norway
References
Norges geologiske undersøkelse.Malmdatabasen. Skuterud Mellomgruver. Forekomst nr.21 i Modum (0623) kommune
Geological Survey of Norway (NGU). The Ore database (Malmdatabasen). Deposit Area 623 - 021.
 
and/or  
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