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
Skuterud Mines, Modum West, Modum, Buskerud, Norway


06947890017606653264448.jpg
Phlogopite

Ludvig Eugen adit, Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
04010950017606653274939.jpg
Phlogopite

Skuterud Mines, Modum West, Modum, Buskerud, Norway
06947890017606653264448.jpg
Phlogopite

Ludvig Eugen adit, Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
04010950017606653274939.jpg
Phlogopite

Skuterud Mines, Modum West, Modum, Buskerud, Norway
05690260017532064848668.jpg
Phlogopite

Ludvig Eugen adit, Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
04010950017606653274939.jpg
Phlogopite

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 Skuterud Mines, Modum West, Modum, Buskerud, Norway
Data Identifiers
Mindat Occurrence Record ID:460153
Long-form Identifier:1:3:460153:1
GUID (UUID V4):0
Localities for Biotite in this Region
Mellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
Nearest other occurrences of Biotite
0.9km (0.6 miles) ⓘMellomgruvene, Skuterud Mines, Modum West, Modum, Buskerud, Norway
4.5km (2.8 miles) ⓘHilsen Farm, Snarum, Modum, Buskerud, Norway
5.8km (3.6 miles) ⓘDøvikkollen, Modum West, Modum, Buskerud, Norway
9.5km (5.9 miles) ⓘDypingdal serpentine-magnesite deposit, Snarum, Modum, Buskerud, Norway
14.4km (8.9 miles) ⓘGrågalten Mine, Sigdal Nikkelværk, Sigdal, Buskerud, Norway
14.7km (9.1 miles) ⓘErtelien Mine, Ertelien Mines, Holleia, Ringerike Ni Mines, Ringerike, Buskerud, Norway
17.8km (11.1 miles) ⓘSkjerpevika, Holleia, Ringerike Ni Mines, Ringerike, Buskerud, Norway
21.3km (13.2 miles) ⓘGrøsli Mine, Flesberg, Buskerud, Norway
22.1km (13.7 miles) ⓘSkaug Mine, Holleia, Ringerike Ni Mines, Ringerike, Buskerud, Norway
24.0km (14.9 miles) ⓘBjertnes pegmatite, Krødsherad, Buskerud, Norway
References
Rosenquist, Ivan Th. (1949) Noen observasjoner og refleksjoner omkring Modum koboltgruver (Nedl.) I. Fahlbåndene [Some observations and reflections on Modum cobalt mines (closed) I. The fahlbands]. Norsk Geologisk Tidsskrift [Norwegian Journal of Geology], 27 (3-4) 187-216
 
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