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
Karlsøy quarry, Finnøya, Hamarøy, Nordland, Norway


Locality type:Quarry
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 Karlsøy quarry, Finnøya, Hamarøy, Nordland, Norway
Data Identifiers
Mindat Occurrence Record ID:1297867
Long-form Identifier:1:3:1297867:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
5.2km (3.2 miles) ⓘHåkonhals Quarry, Finnøya, Hamarøy, Nordland, Norway
10.5km (6.5 miles) ⓘNedre Lapplægeret Quarry, Lapplægeret, Drag, Hamarøy, Nordland, Norway
11.8km (7.3 miles) ⓘJennyhaugen, Drag, Hamarøy, Nordland, Norway
12.2km (7.6 miles) ⓘNedre Eivollen, Eivollen, Drag, Hamarøy, Nordland, Norway
25.7km (16.0 miles) ⓘHundholmen, Narvik, Nordland, Norway
28.5km (17.7 miles) ⓘFunta prospect, Narvik, Nordland, Norway
29.1km (18.1 miles) ⓘTennvatn pegmatite, Sørfold, Nordland, Norway
36.0km (22.4 miles) ⓘHellemobotn, Hamarøy, Nordland, Norway
39.9km (24.8 miles) ⓘSaur prospect, Steigen, Nordland, Norway
45.2km (28.1 miles) ⓘSneisa Iron Prospect, Lødingen, Nordland, Norway
References
Geological Survey of Norway. The Industrial Mineral Database. Deposit Area 1849 - 304. Karlsøy.
Øvereng, Odd (1973) Kvarts - feltspatundersøkelser i Hamarøy kommune, Nordland fylke [Quartz - feldspar investigations in Hamarøy municipality, Nordland county]. Bergvesenet rapport BV 1550
 
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