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
Håkonhals 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 Håkonhals Quarry, Finnøya, Hamarøy, Nordland, Norway
Data Identifiers
Mindat Occurrence Record ID:1280118
Long-form Identifier:1:3:1280118:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
5.2km (3.2 miles) ⓘKarlsøy quarry, Finnøya, Hamarøy, Nordland, Norway
14.7km (9.1 miles) ⓘNedre Lapplægeret Quarry, Lapplægeret, Drag, Hamarøy, Nordland, Norway
16.1km (10.0 miles) ⓘJennyhaugen, Drag, Hamarøy, Nordland, Norway
16.4km (10.2 miles) ⓘNedre Eivollen, Eivollen, Drag, Hamarøy, Nordland, Norway
28.9km (17.9 miles) ⓘHundholmen, Narvik, Nordland, Norway
32.5km (20.2 miles) ⓘTennvatn pegmatite, Sørfold, Nordland, Norway
33.1km (20.6 miles) ⓘFunta prospect, Narvik, Nordland, Norway
37.3km (23.2 miles) ⓘSaur prospect, Steigen, Nordland, Norway
41.0km (25.5 miles) ⓘHellemobotn, Hamarøy, Nordland, Norway
43.6km (27.1 miles) ⓘSneisa Iron Prospect, Lødingen, Nordland, Norway
References
Husdal, Tomas, Müller, Axel, Olerud, Svein, Thoresen, Øivind (2017) 1. Pegmatites of the Tysfjord-Hamarøy area, northern Norway. Geological society of Norway Geological Guides, 6. 3-47
 
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