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
Sjåfjell Fe deposit, Ballangen, Narvik, Nordland, 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 Sjåfjell Fe deposit, Ballangen, Narvik, Nordland, Norway
Data Identifiers
Mindat Occurrence Record ID:755715
Long-form Identifier:1:3:755715:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
3.8km (2.4 miles) ⓘMelkedalen Mines, Melkedalen, Ballangen, Narvik, Nordland, Norway
9.5km (5.9 miles) ⓘJernhammeren, Håfjellet, Ballangen, Narvik, Nordland, Norway
24.5km (15.2 miles) ⓘNordmarken Base Metal Prospect, Evenes, Nordland, Norway
25.3km (15.7 miles) ⓘHundholmen, Narvik, Nordland, Norway
25.3km (15.7 miles) ⓘLakså Base Metal Prospects, Evenes, Nordland, Norway
29.2km (18.1 miles) ⓘFunta prospect, Narvik, Nordland, Norway
32.3km (20.0 miles) ⓘNiingen Zink-Lead Prospects, Evenes, Nordland, Norway
35.3km (21.9 miles) ⓘVilldalsfjell, Skånland, Tjeldsund, Troms og Finnmark, Norway
39.3km (24.4 miles) ⓘNedre Eivollen, Eivollen, Drag, Hamarøy, Nordland, Norway
39.8km (24.8 miles) ⓘJennyhaugen, Drag, Hamarøy, Nordland, Norway
References
Foslie, Steinar (1949) Håfjellsmulden i Ofoten og dens sedimentære jernmanganmalmer. Søndre Ofotens malmforekomster II [Håfjellsmulden in Ofoten and its sedimentary iron-manganese ores. Southern Ofoten ore deposits II]. Norges Geologiske Undersøkelse 178. Norges Geologiske Undersøkelse - In commission of H. Aschehoug & Co. 129 pp.
 
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