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
Søndre Geitryggen Mines, Folldal Mines, Folldal, Innlandet, 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 Søndre Geitryggen Mines, Folldal Mines, Folldal, Innlandet, Norway
Data Identifiers
Mindat Occurrence Record ID:1311030
Long-form Identifier:1:3:1311030:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
2.6km (1.6 miles) ⓘGrimsdalsgruva, Folldal Mines, Folldal, Innlandet, Norway
4.9km (3.1 miles) ⓘNygruva, Folldal Mines, Folldal, Innlandet, Norway
8.8km (5.5 miles) ⓘHovedgruva, Folldal Mines, Folldal, Innlandet, Norway
13.8km (8.6 miles) ⓘNordre Geitryggen Mine, Folldal Mines, Folldal, Innlandet, Norway
24.9km (15.4 miles) ⓘKolla, Oppdal, Trøndelag, Norway
53.4km (33.2 miles) ⓘKaltberget Mine, Kvikne, Tynset, Innlandet, Norway
53.4km (33.2 miles) ⓘOlkar Mine, Kvikne, Tynset, Innlandet, Norway
54.6km (33.9 miles) ⓘSøndre Berstjern Prospect, Kvikne Mines, Tynset, Innlandet, Norway
54.6km (33.9 miles) ⓘMidtre Berstjern Prospect, Kvikne Mines, Tynset, Innlandet, Norway
55.5km (34.5 miles) ⓘKojan Prospects, Kvikne Mines, Tynset, Innlandet, Norway
References
Geological Survey of Norway. The Ore Database. Deposit Area 439 - 013. Geiteryggen.
 
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