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
Kolla, Oppdal, Trøndelag, Norway


Locality type:Mountain
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 Kolla, Oppdal, Trøndelag, Norway
Data Identifiers
Mindat Occurrence Record ID:831863
Long-form Identifier:1:3:831863:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
24.9km (15.4 miles) ⓘSøndre Geitryggen Mines, Folldal Mines, Folldal, Innlandet, Norway
26.8km (16.6 miles) ⓘGrimsdalsgruva, Folldal Mines, Folldal, Innlandet, Norway
29.7km (18.5 miles) ⓘNygruva, Folldal Mines, Folldal, Innlandet, Norway
31.2km (19.4 miles) ⓘHovedgruva, Folldal Mines, Folldal, Innlandet, Norway
33.6km (20.9 miles) ⓘØrnhammeren, Oppdal, Trøndelag, Norway
34.9km (21.7 miles) ⓘNordre Geitryggen Mine, Folldal Mines, Folldal, Innlandet, Norway
36.3km (22.6 miles) ⓘSliper, Oppdal, Trøndelag, Norway
53.0km (32.9 miles) ⓘOlkar Mine, Kvikne, Tynset, Innlandet, Norway
53.6km (33.3 miles) ⓘKaltberget Mine, Kvikne, Tynset, Innlandet, Norway
55.2km (34.3 miles) ⓘSøndre Berstjern Prospect, Kvikne Mines, Tynset, Innlandet, Norway
References
Witsø, Tor (1995) Mineraler i Oppdal med beskrivelse, Driva Kro og steinsenter.
 
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