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
Frikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, Norway


04277910017271970225045.jpg
Biotite

Frikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
04277910017271970225045.jpg
Biotite

Frikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
04277910017271970225045.jpg
Biotite

Frikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, 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 Frikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
Data Identifiers
Mindat Occurrence Record ID:266990
Long-form Identifier:1:3:266990:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
0.4km (0.2 miles) ⓘFrikstad 03 Feldspar Quarry (Tuftane), Frikstad, Iveland, Agder, Norway
0.4km (0.2 miles) ⓘFrikstad 17 Prospect (Rogdevollen Prospect), Frikstad, Iveland, Agder, Norway
0.4km (0.3 miles) ⓘFrikstad 06 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
0.4km (0.3 miles) ⓘFrikstad 13 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
0.5km (0.3 miles) ⓘFrikstad 12 Feldspar Quarry (Høyland), Frikstad, Iveland, Agder, Norway
0.5km (0.3 miles) ⓘFrikstad 05 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
0.5km (0.3 miles) ⓘFrikstad 32 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
0.5km (0.3 miles) ⓘFrikstad 14 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
0.5km (0.3 miles) ⓘFrikstad 33 Feldspar Quarry, Frikstad, Iveland, Agder, Norway
0.7km (0.4 miles) ⓘFrikstad 04 Feldspar Quarry (Dauren), Frikstad, Iveland, Agder, Norway
References
Revheim, Olav (2007) Slobrekka, Iveland, del 2. STEIN. Nordisk magasin for populær geologi, 34 (1) 3-5
 
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