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
Likamännikkö syenite intrusion, Suomussalmi, Kainuu, Finland


Locality type:Intrusion
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 Likamännikkö syenite intrusion, Suomussalmi, Kainuu, Finland
Data Identifiers
Mindat Occurrence Record ID:1374100
Long-form Identifier:1:3:1374100:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
35.5km (22.1 miles) ⓘKuikkapuro deposit, Suomussalmi, Kainuu, Finland
62.0km (38.5 miles) ⓘPahkalampi, Suomussalmi, Kainuu, Finland
64.5km (40.1 miles) ⓘMoukkori deposit (Housuvaara 1), Suomussalmi, Kainuu, Finland
89.0km (55.3 miles) ⓘMustavaara, Taivalkoski, North Ostrobothnia, Finland
89.4km (55.5 miles) ⓘNäränkävaara, Kuusamo, North Ostrobothnia, Finland
References
Mikkola, P., Salminen, P., Torppa, A., & Huhma, H. (2011). The 2.74 Ga Likamännikkö complex in Suomussalmi, East Finland: lost between sanukitoids and truly alkaline rocks?. Lithos, 125(1-2), 716-728.
 
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